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Current File : /home/u862839997/domains/upscexamnotes.com/public_html/includes/action.php
<?php
if(isset($_POST['action']))
{
	$_POST['action']();	
}else{
    header("Location:index.php");
}

function applycpn() {
    include "../config/db.php";
    $cpn = mysqli_real_escape_string($conn,$_POST['cpn']);
	$sql = mysqli_query($conn,"select * from coupons where code='$cpn'");
	if(mysqli_num_rows($sql)>0){
	    echo "1";
	}else{
	    echo "0";
	}
	die;
}
function login()
{
	include "../config/db.php";
	
	$recaptcha = isset($_POST['g-recaptcha-response'])?$_POST['g-recaptcha-response']:null;
	if(empty($recaptcha)){
	    $_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Re-captcha Required.";
		header("location:../login.php");
		exit();
	}
	
	$validRec = validate_recaptcha($recaptcha);
	if(!$validRec){
        $_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Re-captcha Required.";
		header("location:../login.php");
	}
	
	$email=mysqli_real_escape_string($conn,$_POST['email']);
	$password=mysqli_real_escape_string($conn,$_POST['password']);
	$password=md5($password);
	$sql = mysqli_query($conn,"select * from users where email='$email' and password='$password'");
	$data=mysqli_fetch_assoc($sql);
	if(mysqli_num_rows($sql)>0)
	{	
		$uid=$data['id'];
		$online_sql=mysqli_query($conn,"select * from online_users where user_id='$uid' and not type='admin'");
		$time = time();
		
		if(mysqli_num_rows($online_sql)>0){
    		$online_data=mysqli_fetch_assoc($online_sql);
    		$cal_time=$online_data['login_time']+300;
    		$total_time=$online_data['last_login']-$cal_time;
    		$total_time=ceil($total_time/60);
    
    		
    		$date=date("d-m-y");
    		mysqli_query($conn,"update online_users set login_status='online',total_time_min=total_time_min+$total_time, login_time='$time',last_login_date='$date' where user_id='$uid' and not type='admin'");
		}
		
		$plan_name="no-plan"; $need_to_upgrade=0;
        $today = date("Y-m-d");
        $plan_query = mysqli_query($conn,"select * from subscription_plan_buy_by_user where user_id=$uid and expired_date>='$today'");
        $pageAccess = [];
        while($plan_name_data=mysqli_fetch_assoc($plan_query)){
            $pages_ = $plan_name_data['page_access'];
            if($pages_){
            
                $pageAccess1 = explode(",",$pages_);
                foreach($pageAccess1 as $arr){
                    if(!in_array($arr,$pageAccess)){
                        $pageAccess[] = $arr;
                        
                    }
                }
            }
        } 
        
        //Test series and Courses
        $accessSeries = $courseSeries = $packagesEverything =[];
        $testseries_query = mysqli_query($conn,"select type_id,type from buyings_by_users where user_id=$uid and expired_date>='$today' and (type='test-series' OR type='course' OR type='package')");
        while($testseries_name_data = mysqli_fetch_assoc($testseries_query)){
            if($testseries_name_data['type']=='test-series'){
                $accessSeries[] = $testseries_name_data['type_id'];
            }
            if($testseries_name_data['type']=='course'){
                $courseSeries[] = $testseries_name_data['type_id'];
            }
            if($testseries_name_data['type']=='package'){
                $pid = $testseries_name_data['type_id'];
                $packagesEverything[] = $pid;
                
                //get test series from packages
                $testseries = mysqli_query($conn,"select * from everything_packages where id='$pid'");
                $testseriesdata = mysqli_fetch_assoc($testseries);
                $testIds = $testseriesdata['testseries_ids'];
                if(!empty($testIds)){
                    $testIds = explode(",",$testIds);
                    foreach($testIds as $tid){
                        $accessSeries[] = $tid;
                    }
                }
            }
        }
        $_SESSION['test_series_package'] = $accessSeries;
        $_SESSION['courses'] = $courseSeries;
        $_SESSION['packages'] = $packagesEverything;
        
        $_SESSION['access_page']=$pageAccess;
        
		$_SESSION['userid']=$uid; 
		$_SESSION['useremail']=$data['email'];
		$_SESSION['userename']=$data['name'];
		$_SESSION['google']=$data['google'];
		$_SESSION['status']=$data['status'];
		$_SESSION['tutor']=$data['tutor'];
		$_SESSION['is_admin']=$data['is_admin'];
		$_SESSION['plan_name']=$plan_name;
		$_SESSION['need_to_upgrade']=$need_to_upgrade;
		$_SESSION['logged_in']=true;
		
		//set ias free time for 8 days
		$iasFreeTime = $data['ias_free_time'];
		if(empty($iasFreeTime)) {
		    $iasFreeTime = strtotime("+10 days", $time);
            mysqli_query($conn,"update users set ias_free_time='$iasFreeTime' where id='$uid'");  
            
		}
		if($iasFreeTime > time()){
		    $_SESSION['is_ias_series_free'] = true;
		}
		
		$redirect = isset($_SESSION['redirect_url'])?$_SESSION['redirect_url']:'../';
		unset($_SESSION['redirect_url']);
		header("location:$redirect");
		
		exit();
	}else
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Invalid Username or Password"; 
		header("location:../login.php");
		die();
	}
}

function register()
{
	include "../config/db.php";
	
	$recaptcha = isset($_POST['g-recaptcha-response'])?$_POST['g-recaptcha-response']:null;
	if(empty($recaptcha)){
	    $_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Re-captcha Required.";
		header("location:../register.php");
		exit();
	}
	
	$validRec = validate_recaptcha($recaptcha);
	if(!$validRec){
        $_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Re-captcha Required.";
		header("location:../register.php");
	}
	
	$fname=mysqli_real_escape_string($conn,$_POST['fname']);
	$lname=mysqli_real_escape_string($conn,$_POST['lname']);
	$fullname=$fname." ".$lname;
	$email=mysqli_real_escape_string($conn,$_POST['email']);
	$password=mysqli_real_escape_string($conn,$_POST['password']);
	$cpassword=mysqli_real_escape_string($conn,$_POST['cpassword']);
	$agree=mysqli_real_escape_string($conn,$_POST['agree']);
	$test1=mysqli_real_escape_string($conn,$_POST['test1']);
	
	$number = mysqli_real_escape_string($conn,$_POST['number']);
	
	if($test1!='prevent'){
	    header("location:../register.php");
		exit();
	}
	
	if($password!=$cpassword)
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Both password must be same"; 
		header("location:../register.php");
		exit();
	}
	elseif(mysqli_num_rows(mysqli_query($conn,"select * from users where email='$email'"))>0)
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Email already exist"; 
		header("location:../register.php");
		exit();
	}else
	{	$rea_pass = $cpassword;
	    $cpassword=md5($cpassword);
		mysqli_query($conn,"insert into users(name,email,password,google,tutor,status,term_conditions,plan_id,plan_expired,passcode,number) values('$fullname','$email','$cpassword','no','no','active','$agree','1','unlimited','$rea_pass','$number')");
		$sql=mysqli_query($conn,"select * from users where email='$email' and password='$cpassword'");
		$data=mysqli_fetch_assoc($sql);
		$uid=$data['id'];
		$_SESSION['userid']=$uid;
		$_SESSION['useremail']=$data['email'];
		$_SESSION['google']=$data['google'];
		$_SESSION['userename']=$data['name'];
		$_SESSION['status']=$data['status'];
		$_SESSION['tutor']=$data['tutor'];
		$_SESSION['plan_name']="no-plan";
		$_SESSION['logged_in']=true;
		$_SESSION['is_admin'] = isset($data['is_admin'])?$data['is_admin']:0;
		$_SESSION['access_page']=[];
		if($data['tutor']=='no')
		{
			$who="user";
		}else{
			$who="tutor";
		}
		$time=time()+300;
		$date=date("d-m-y");
		mysqli_query($conn,"insert into online_users(user_id,login_status,login_time,last_login,type,last_login_date) values('$uid','online','$time','$time','$who','$date')");
		
		//set ias free time for 8 days
	    $iasFreeTime = strtotime("+10 days", time());
        mysqli_query($conn,"update users set ias_free_time='$iasFreeTime' where id='$uid'");  
        $_SESSION['is_ias_series_free'] = true;
		
		header("location:../");
		die();
	}
}

function webniarRegister() {
    include "../config/db.php";
    
	$email = mysqli_real_escape_string($conn,$_POST['email']);
	$phone = mysqli_real_escape_string($conn,$_POST['phone']);
	$id = mysqli_real_escape_string($conn,$_POST['id']);
	
	$sql = mysqli_query($conn,"select * from webinars where id='$id'");
	$data = mysqli_fetch_assoc($sql);
	$webinarLink = $data['link'];
	$date = $data['date'];
	
	$message = '';
	$sql = mysqli_query($conn,"select * from webinars_register where email='$email' and phone='$phone' and webinar_id='$id' ");
	if(mysqli_num_rows($sql)<=0)
	{
	   mysqli_query($conn,"insert into webinars_register(email,phone,webinar_id) VALUES('$email','$phone','$id')");
	   $message = 'Registered Successfully!';
	}
	
	if ($date!=date('Y-m-d')) {
	   echo json_encode(['success'=>false,'message'=> $message.'! Webinar is not started yet']);
	   die;
	}
	
    echo json_encode(['success'=>true,'message' => $webinarLink]);
    die;
}

function edit_profile()
{
	include "../config/db.php";
	$fname=mysqli_real_escape_string($conn,$_POST['fname']);
	$number=mysqli_real_escape_string($conn,$_POST['number']);
	$email=mysqli_real_escape_string($conn,$_POST['email']);
	$city=mysqli_real_escape_string($conn,$_POST['city']);
	$gender=mysqli_real_escape_string($conn,$_POST['gender']);
	$dob=mysqli_real_escape_string($conn,$_POST['dob']);
	$maritial=mysqli_real_escape_string($conn,$_POST['maritial']);
	$age=mysqli_real_escape_string($conn,$_POST['age']);
	$country=mysqli_real_escape_string($conn,$_POST['country']);
	$state=mysqli_real_escape_string($conn,$_POST['state']);
	$address=mysqli_real_escape_string($conn,$_POST['address']);
	$about=mysqli_real_escape_string($conn,$_POST['about']);
	if(isset($_FILES['photo']))
	{
		$photo=$_FILES['photo']['name'];
        $file_size =$_FILES['photo']['size'];
        $file_tmp =$_FILES['photo']['tmp_name'];
        $exp=explode('.',$photo);
        $file_ext=strtolower(end($exp));
        
        $exts = ['jpeg','png','jpg','webp'];
        if(!in_array($file_ext,$exts)){
            $_SESSION['error-class']='alert-info';
        	 $_SESSION['error-msg']='Bad file, File must be an Image';
        	 header("Location:../edit-profile.php");
        	 exit();
        }
        
        $newfilename = round(microtime(true)) . '.' . end($exp);
        if($file_size>40000000)
        {
        	 $_SESSION['error-class']='alert-info';
        	 $_SESSION['error-msg']='File must be less than 5MB';
        	 header("Location:../edit-profile.php");
        	 exit();
        }
        echo "update users set photo='$newfilename' where id=4";
        mysqli_query($conn,"update users set photo='$newfilename' where id='$userid'");
        move_uploaded_file($file_tmp,"../images/profiles/".$newfilename);
		echo mysqli_error($conn);
	}
	mysqli_query($conn,"update users set name='$fname',email='$email',city='$city',gender='$gender',birth='$dob',maritial='$maritial',age='$age',country='$country',state='$state',address='$address',number='$number',about_you='$about' where id='$userid'");
		header("location:../edit-profile.php");
		exit();
}

function changePassword()
{
	include "../config/db.php";
	$cpass=mysqli_real_escape_string($conn,$_POST['cpass']);
	$cpass=md5($cpass);
	$npass=mysqli_real_escape_string($conn,$_POST['npass']);
	$vpass=mysqli_real_escape_string($conn,$_POST['vpass']);
	if($npass!=$vpass)
    {	 $_SESSION['error-class']='alert-warning';
    	 $_SESSION['error-msg']='Both password must be same';
    	 header("Location:../edit-profile.php");
    	 exit();
    }elseif(mysqli_num_rows(mysqli_query($conn,"select * from users where id='$userid' and password='$cpass'"))==0)
    {
    	$_SESSION['error-class']='alert-danger';
    	$_SESSION['error-msg']='Old password is wrong';
    	 header("Location:../edit-profile.php");
    	 exit();
    }else
    {
        $real_pw=$vpass;
    	$vpass=md5($vpass);
    	mysqli_query($conn,"update users set password='$vpass',passcode='$real_pw' where id='$userid'");
    	$_SESSION['error-msg']='Password updated';
    	 header("Location:../edit-profile.php");
    	 exit();
    }
}

function contact_us()
{
	include "../config/db.php";
	$name=mysqli_real_escape_string($conn,$_POST['name']);
	$email=mysqli_real_escape_string($conn,$_POST['email']);
	$subject=mysqli_real_escape_string($conn,$_POST['subject']);
	$message=mysqli_real_escape_string($conn,$_POST['message']);
	    
	$recaptcha = isset($_POST['g-recaptcha-response'])?$_POST['g-recaptcha-response']:null;
	if(empty($recaptcha)){
	    $_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Re-captcha Required.";
		header("Location:../contact.php");
		exit();
	}
	
	$validRec = validate_recaptcha($recaptcha);
	if(!$validRec){
        $_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Re-captcha Required.";
		header("Location:../contact.php");
	}
	
	$sql=mysqli_query($conn,"insert into contact_us(name,email,subject,message) values('$name','$email','$subject','$message')");
	if($sql)
	{
		$_SESSION['error-class']='alert-info';
		$_SESSION['error-msg']="Your response has been sent. Our team will contact you soon.";
		header("Location:../contact.php");
		exit();
	}else
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Message failed, Please contact any tutor!"; 
		header("Location:../contact.php");
		exit();
	}
}

function send_message()
{
	include "../config/db.php";
	$message=mysqli_real_escape_string($conn,$_POST['message']);
	$tid=mysqli_real_escape_string($conn,$_POST['tid']);
	$sql=mysqli_query($conn,"insert into messages(sender,receiver,message,status,date_time) values('$userid','$tid','$message','pending','$time')");
	if($sql)
	{
		$_SESSION['error-class']='alert-success';
		$_SESSION['error-msg']='Message sent Successfully';
		header("Location:../inbox.php?s=".$tid);
		exit();
	}else
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Message could not sent, Please connect us with email"; 
		header("Location:../inbox.php?s=".$tid);
		exit();
	}
}

function save_newspaper_note()
{
	include "../config/db.php";
	$content=mysqli_real_escape_string($conn,$_POST['content']);
	$heading=mysqli_real_escape_string($conn,$_POST['heading']);
	if(isset($_POST['newspaper_id']))
	{
		if($_POST['newspaper_id']!="")
		{
			$newspaperID=mysqli_real_escape_string($conn,$_POST['newspaper_id']);
		}
	}
	$query=mysqli_query($conn,"insert into newspaper_notes(userid,heading,content,date) values('$userid','$heading','$content','$date')");
	if($query)
	{
		$_SESSION['error-class']='alert-success';
		$_SESSION['error-msg']="Notes saved in your profile, you can go to My notes and see, edit them";
		if(isset($newspaperID))
		{
			header("Location:../read-newspaper.php?newspaper=".$newspaperID);
			exit();
		}else{
			header("Location:../newspapers.php");
			exit();
		} 
		
	}else
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Note saving failed, Please contact our tutors"; 
		if(isset($newspaperID))
		{
			header("Location:../read-newspaper.php?newspaper=".$newspaperID);
			exit();
		}else{
			header("Location:../newspapers.php");
			exit();
		}
	}
}

function save_book_note()
{
	include "../config/db.php";
	$content=mysqli_real_escape_string($conn,$_POST['content']);
	$heading=mysqli_real_escape_string($conn,$_POST['heading']);
	if(isset($_POST['book_id']))
	{
		if($_POST['book_id']!="")
		{
			$book_id=mysqli_real_escape_string($conn,$_POST['book_id']);
		}
	}

	$query=mysqli_query($conn,"insert into book_notes(userid,heading,content,date) values('$userid','$heading','$content','$date')");
	if($query)
	{
		$_SESSION['error-class']='alert-success';
		$_SESSION['error-msg']="Notes saved in your profile, you can go to My notes and see, edit them"; 
		if(isset($book_id))
		{
			header("Location:../read-book.php?book=".$book_id);
			exit();
		}else{
			header("Location:../upsc-books.php");
			exit();
		}
	}else
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Note saving failed, Please contact our tutors"; 
		if(isset($book_id))
		{
			header("Location:../read-book.php?book=".$book_id);
			exit();
		}else{
			header("Location:../upsc-books.php");
			exit();
		}
	}
}

function save_article_note()
{
	include "../config/db.php";
	$content=mysqli_real_escape_string($conn,$_POST['content']);
	$heading=mysqli_real_escape_string($conn,$_POST['heading']);
	$a_id=mysqli_real_escape_string($conn,$_POST['a_id']);
	$query=mysqli_query($conn,"insert into article_notes(userid,heading,content,date) values('$userid','$heading','$content','$date')");
	if($query)
	{
		$_SESSION['error-class']='alert-success';
		$_SESSION['error-msg']="Notes saved in your profile, you can go to My notes and see, edit them"; 
		header("Location:../upsc-article.php?s=".$a_id);
		exit();
	}else
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Note saving failed, Please contact our tutors"; 
		header("Location:../upsc-article.php?s=".$a_id);
		die();
	}
}

function save_personal_note()
{
	include "../config/db.php";
	$content=mysqli_real_escape_string($conn,$_POST['content']);
	$heading=mysqli_real_escape_string($conn,$_POST['heading']);
	$query=mysqli_query($conn,"insert into personal_notes(userid,heading,content,date) values('$userid','$heading','$content','$date')");
	if($query)
	{
		$_SESSION['error-class']='alert-success';
		$_SESSION['error-msg']="Notes saved in your profile, you can go to My notes and see, edit them"; 
		header("Location:../my-notes.php");
		exit();
	}else
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Note saving failed, Please contact our tutors"; 
		header("Location:../my-notes.php");
		die();
	}
}

function delete_single_note()
{
	include "../config/db.php";
	$id=mysqli_real_escape_string($conn,$_POST['id']);
	$note_type=mysqli_real_escape_string($conn,$_POST['note_type']);
	$userid=$_SESSION['userid'];

	if($note_type=="personal"){
		$query=mysqli_query($conn,"delete from personal_notes where id='$id' and userid='$userid' limit 1");
	}elseif ($note_type=="newspaper") {
		$query=mysqli_query($conn,"delete from newspaper_notes where id='$id' and userid='$userid' limit 1");
	}elseif ($note_type=="book") {
		$query=mysqli_query($conn,"delete from book_notes where id='$id' and userid='$userid' limit 1");
	}elseif ($note_type=="article") {
		$query=mysqli_query($conn,"delete from article_notes where id='$id' and userid='$userid' limit 1");
	}
	if($query)
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="Note deleted Successfully"; 
		header("Location:../my-notes.php");
		exit();
	}else
	{
		$_SESSION['error-class']='alert-warning';
		$_SESSION['error-msg']="Deletion failed, Please contact our tutors"; 
		header("Location:../my-notes.php");
		die();
	}
}

function edit_single_note()
{
	include "../config/db.php";
	  $id=mysqli_real_escape_string($conn,$_POST['id']);
	  $note_type=mysqli_real_escape_string($conn,$_POST['note_type']);
	  $userid=$_SESSION['userid'];
	 $heading=mysqli_real_escape_string($conn,$_POST['heading']);
	  $content=mysqli_real_escape_string($conn,$_POST['content']);
	if($note_type=="personal"){
		$query=mysqli_query($conn,"update personal_notes set heading='$heading', content='$content' where id='$id' and userid='$userid'");
	}elseif ($note_type=="newspaper") {
		$query=mysqli_query($conn,"update newspaper_notes set heading='$heading', content='$content' where id='$id' and userid='$userid'");
	}elseif ($note_type=="book") {
		$query=mysqli_query($conn,"update book_notes set heading='$heading', content='$content' where id='$id' and userid='$userid'");
	}elseif ($note_type=="article") {
		$query=mysqli_query($conn,"update article_notes set heading='$heading', content='$content' where id='$id' and userid='$userid'");
	}
	if($query)
	{
		$_SESSION['error-class']='alert-success';
		$_SESSION['error-msg']="Note updated Successfully"; 
		header("Location:../my-notes.php");
		exit();
	}else
	{
		$_SESSION['error-class']='alert-warning';
		$_SESSION['error-msg']="Updation failed, Please contact our tutors"; 
		header("Location:../my-notes.php");
		die();
	}
}

function download_single_note()
{
	include "../config/db.php";
	include "../config/functions.php";
	$note_id=mysqli_real_escape_string($conn,$_POST['note_id']);
	$note_type=mysqli_real_escape_string($conn,$_POST['note_type']);
	if($note_type=="personal"){
		$sql="select * from personal_notes where id='$note_id'";
		$pdf_name="personal_notes";
	}elseif ($note_type=="newspaper") {
		$sql="select * from newspaper_notes where id='$note_id'";
		$pdf_name="newspaper_notes";
	}elseif ($note_type=="book") {
		$sql="select * from book_notes where id='$note_id'";
		$pdf_name="book_notes";
	}elseif ($note_type=="article") {
		$sql="select * from article_notes where id='$note_id'";
		$pdf_name="article_notes";
	}

	$html="";
	$html="<div><h3>UPSC NOTE from Website</h3></div>";
	$query=mysqli_query($conn,$sql);
	while($note_data=mysqli_fetch_assoc($query))
	{
		$heading=$note_data['heading'];
		$content=$note_data['content'];
		$html.="<div>".$heading."</div><br />";
		$html.="<div>".$content."</div>";
	}
	
	download_pdf_sigle($html,$pdf_name);

	$_SESSION['error-class']='alert-success';
	$_SESSION['error-msg']="Downloaded successfully"; 
	header('Refresh: 10; URL=../my-notes.php');
	//header("Location:../my-notes.php");
	exit();
}

function download_all_notes()
{
	include "../config/db.php";
	include "../config/functions.php";
	
	if(isset($_POST['userid']))
	{
		$userid= $_POST['userid'];
	}

	if(isset($_POST['wise'])){
		 $wise=mysqli_real_escape_string($conn,$_POST['wise']);
	}else{$wise='';}

	$note_type=mysqli_real_escape_string($conn,$_POST['note_type']);
    $pdf_name="upscexamnotes_notes";
	if($note_type=="personal"){
		if($wise!='')
		{
			if($wise=='day_wise')
			{
				$day_wise=mysqli_real_escape_string($conn,$_POST['day_wise']);
				$today=date('d-m-y');
				$last_date= date('d-m-y', strtotime("-$day_wise days"));
				$sql="select * from personal_notes where userid='$userid' and (date between '$last_date' and '$today') order by id desc"; die();
			}else
			{
				$month_wise=mysqli_real_escape_string($conn,$_POST['month_wise']);
				$year_wise=mysqli_real_escape_string($conn,$_POST['year_wise']);
				$sql="select * from personal_notes where userid='$userid' and month(date)='$month_wise'";
			}
		}else{
			$sql="select * from personal_notes where userid='$userid' order by id desc";
		}
		$variable="PERSONAL NOTES";
		$pdf_name="daywise_notes";
	}elseif ($note_type=="newspaper") {
		if($wise!='')
		{
			if($wise=='day_wise')
			{
				$day_wise=mysqli_real_escape_string($conn,$_POST['day_wise']);
				$today=date('d-m-y');
				$last_date= date('d-m-y', strtotime("-$day_wise days"));
				$sql="select * from newspaper_notes where userid='$userid' and (date between '$last_date' and '$today') order by id desc"; die();
			}else
			{
				$month_wise=mysqli_real_escape_string($conn,$_POST['month_wise']);
				$year_wise=mysqli_real_escape_string($conn,$_POST['year_wise']);
				$sql="select * from newspaper_notes where userid='$userid' and month(date)='$month_wise'";
			}
		}else{
			$sql="select * from newspaper_notes where id='$note_id' order by id desc";
		}
		$variable="NEWSPAPER NOTES";
		$pdf_name="newspaper_notes";
	}elseif ($note_type=="book") {
		if($wise!='')
		{
			if($wise=='day_wise')
			{
				$day_wise=mysqli_real_escape_string($conn,$_POST['day_wise']);
				$today=date('d-m-y');
				$last_date= date('d-m-y', strtotime("-$day_wise days"));
				$sql="select * from book_notes where userid='$userid' and (date between '$last_date' and '$today') order by id desc"; die();
			}else
			{
				$month_wise=mysqli_real_escape_string($conn,$_POST['month_wise']);
				$year_wise=mysqli_real_escape_string($conn,$_POST['year_wise']);
				$sql="select * from book_notes where userid='$userid' and month(date)='$month_wise'";
			}
		}else{
			$sql="select * from book_notes where id='$note_id' order by id desc";
		}
		$variable="BOOK NOTES";
		$pdf_name="book_notes";
	}elseif ($note_type=="article") {
		if($wise!='')
		{
			if($wise=='day_wise')
			{
				$day_wise=mysqli_real_escape_string($conn,$_POST['day_wise']);
				$today=date('d-m-y');
				$last_date= date('d-m-y', strtotime("-$day_wise days"));
				$sql="select * from article_notes where userid='$userid' and (date between '$last_date' and '$today') order by id desc"; die();
			}else
			{
				$month_wise=mysqli_real_escape_string($conn,$_POST['month_wise']);
				$year_wise=mysqli_real_escape_string($conn,$_POST['year_wise']);
				$sql="select * from article_notes where userid='$userid' and month(date)='$month_wise'";
			}
		}else{
			$sql="select * from article_notes where id='$note_id' order by id desc";
		}
		
		$variable="ARTICLE NOTES";
		$pdf_name="article_notes";
	}

	$query=mysqli_query($conn,$sql);
	if(mysqli_num_rows($query)==0)
	{
		$_SESSION['error-class']='alert-danger';
		$_SESSION['error-msg']="No note found for your selection!"; 
		header("Location:../my-notes.php");
		exit();
	}

	$html="<style>.text-center{text-align:center;}</style>";
	$html.="<div><h3 class='text-center'>Upsc Note from Website</h3></div>";
	$html.="<h4>".$variable."</h4><br />";
	
	while($note_data=mysqli_fetch_assoc($query))
	{
		$heading=$note_data['heading'];
		$content=$note_data['content'];
		$html.="<span style='color:white;background:black;padding:5px;'>".$note_data['date']."</span>";
		$html.="<div>".$heading."</div><br />";
		$html.="<div>".$content."</div>";
		$html.="<hr /><br />";
	}
	
	download_pdf_sigle($html,$pdf_name);

	$_SESSION['error-class']='alert-success';
	$_SESSION['error-msg']="Downloaded successfully"; 
	header("Location:../my-notes.php");
	exit();
}

function quiz_10_submit()
{
	include "../config/db.php";
	include "../config/functions.php";
	$userid= $_SESSION['userid'];
	$answers=$_POST['answer'];
	$quizID=mysqli_real_escape_string($conn,$_POST['quizID']);
	$marks=0;
	$by_student="insert into quiz_10_by_students(quiz_id,question_id,answer,student_id) values";
	foreach($answers as $key=>$value)
	{
		$query=mysqli_query($conn,"select * from quiz_10_quest_ans where question_id='$key' and answer='$value'");
		if(mysqli_num_rows($query)>0)
		{
			$marks=$marks+1;
		}
		$by_student.="('$quizID','$key','$value','$userid'),";
	}
	$by_student=rtrim($by_student, ',');
	mysqli_query($conn,$by_student);
	mysqli_query($conn,"insert into quiz_10_marks_record(quiz_id,student_id,marks) values('$quizID','$userid','$marks')");
	$_SESSION['temp_marks']=$marks;
	header("Location:../upsc-test.php?quiz=".$quizID);
	exit();
}


//csat quizs submit
function csat_quiz_10_submit()
{
	include "../config/db.php";
	include "../config/functions.php";
	$userid= $_SESSION['userid'];
	$answers=$_POST['answer'];
	$quizID=mysqli_real_escape_string($conn,$_POST['quizID']);
	$marks=0;
	$by_student="insert into quiz_daily_csat_by_students(quiz_id,question_id,answer,student_id) values";
	foreach($answers as $key=>$value)
	{
		$query=mysqli_query($conn,"select * from quiz_daily_csat_quest_ans where question_id='$key' and answer='$value'");
		if(mysqli_num_rows($query)>0)
		{
			$marks=$marks+1;
		}
		$by_student.="('$quizID','$key','$value','$userid'),";
	}
	$by_student=rtrim($by_student, ',');
	mysqli_query($conn,$by_student);
	mysqli_query($conn,"insert into quiz_daily_csat_marks_record(quiz_id,student_id,marks) values('$quizID','$userid','$marks')");
	$_SESSION['temp_marks']=$marks;
	header("Location:../csat-daily-quiz.php?quiz=".$quizID);
	exit();
}

function submit_main_question_ans()
{
	include "../config/db.php";
	$sid=$userid;
	$quiz_id=mysqli_real_escape_string($conn,$_POST['quiz_id']);
	$question_id=mysqli_real_escape_string($conn,$_POST['question_id']);
	$test_type=mysqli_real_escape_string($conn,$_POST['test_type']);
	if(mysqli_num_rows(mysqli_query($conn,"select * from main_exam_given_by_students where quiz_id='$quiz_id' and question_id='$question_id' and student_id='$sid'"))>0)
	{
		echo "<script>alert('question already submitted')</script>";
		echo "<script>window.open('../main-test-review.php?quiz=".$quiz_id."','_self')</script>";
		
		exit();
	}

	if(isset($_POST['write']) && $_POST['write']!='' ){

		$write=mysqli_real_escape_string($conn,$_POST['write']);
		
		mysqli_query($conn,"insert into main_exam_given_by_students(quiz_id,question_id,answer,student_id,check_status) values('$quiz_id','$question_id','$write','$sid','unchecked')");
		header("location:../upsc-mains-test.php?quiz=".$quiz_id);
		exit();
	}

	if(isset($_FILES['photo']) )
	{ 	
		if($_FILES['photo']['name']!=''){
			$photo=$_FILES['photo']['name'];
	        $file_size =$_FILES['photo']['size'];
	        $file_tmp =$_FILES['photo']['tmp_name'];
	        $exp=explode('.',$photo);
	        $file_ext=strtolower(end($exp));
	        $newfilename = round(microtime(true)) . '.' . end($exp);
	       	move_uploaded_file($file_tmp,"../images/answersheet/".$newfilename); 
	        mysqli_query($conn,"insert into main_exam_given_by_students(quiz_id,question_id,answersheet,student_id,check_status) values('$quiz_id','$question_id','$newfilename','$sid','unchecked')");
	        header("location:../upsc-mains-test.php?quiz=".$quiz_id);
			exit();
    	}
      
	}

}

function change_task_status()
{
	include "../config/db.php";
	include "../config/functions.php";
	$userid= $_SESSION['userid'];
	$tutor_id=mysqli_real_escape_string($conn,$_POST['tutor_id']);
	$task_id=mysqli_real_escape_string($conn,$_POST['task_id']);
	$status=mysqli_real_escape_string($conn,$_POST['status']);
	mysqli_query($conn,"update tutor_tasks set status='$status' where tutor_id='$tutor_id' and task_id='$task_id'");
	header("Location:../tutor-tasks.php");
	exit();
}

//Test series' test save from new folder test-series
function save_prelims_test()
{
	include "../config/db.php";
	// check if no answer is selected
	$quiz_id = $_POST['quiz_id'];

	if(empty($_POST['answer']))
	{
		echo "<script>alert('you need to answer at least one question for submission!')</script>";
		echo "<script>window.open('../test-series/test-attempt?id=".$quiz_id."','_self')</script>";
	}else{
		$userid = $_SESSION['userid'];
		$answers = $_POST['answer'];
		
		// check student quiz already given or not 
// 		if(==0) {
            $alreadyGiven = mysqli_num_rows(mysqli_query($conn,"select id from everything_prelims_by_students where quiz_id='$quiz_id' and student_id='$userid'"));
            if ($alreadyGiven) {
                mysqli_query($conn,"DELETE FROM everything_prelims_by_students where quiz_id='$quiz_id' and student_id='$userid'");
                
                // mysqli_query($conn,"DELETE FROM everything_prelims_marks_record where quiz_id='$quiz_id' and student_id='$userid'");
            }
            
			$query = "insert into everything_prelims_by_students(quiz_id,question_id,answer,student_id) values";
			foreach($answers as $key=>$value)
			{
				$question_id=$key;
				$answer=$value;
				$query.="('$quiz_id','$question_id','$answer','$userid'),";
			}
			$query=rtrim($query, ',');
			mysqli_query($conn,$query);
			
			//Update Atttempts
			//insert record of marks if not recoreded
        	if (mysqli_num_rows(mysqli_query($conn,"select * from everything_prelims_marks_record where quiz_id='$quiz_id' and student_id='$userid'"))>0)
        	{
        		//update re attempt marks etc
        	    mysqli_query($conn,"UPDATE everything_prelims_marks_record
        	    SET reattempt_left=reattempt_left-1 WHERE quiz_id='$quiz_id' and student_id='$userid'");
        	}
        	
			header("Location:../test-series/prelims-result.php?quiz=".$quiz_id);
			exit();
// 		}else{
// 			echo "<script>alert('You have already attended this quiz!')</script>";
// 			echo "<script>window.open('../test-series/test-attempt?id=".$quiz_id."','_self')</script>";
// 		}
	}
}

function save_100_quiz()
{
	include "../config/db.php";
	// check if no answer is selected
	if(!isset($_POST['answer']))
	{
		echo "<script>alert('you need to answer at least one question for submission!')</script>";
		echo "<script>window.open('../upsc-test-series','_self')</script>";
	}else{
		$userid= $_SESSION['userid'];
		$answers=$_POST['answer'];
		$quiz_id=$_POST['quiz_id'];
		// check student quiz already given or not 
		if(mysqli_num_rows(mysqli_query($conn,"select id from quiz_100_by_students where quiz_id='$quiz_id' and student_id='$userid'"))==0){

			$query="insert into quiz_100_by_students(quiz_id,question_id,answer,student_id) values";
			foreach($answers as $key=>$value)
			{
				$question_id=$key;
				$answer=$value;
				$query.="('$quiz_id','$question_id','$answer','$userid'),";
			}
			$query=rtrim($query, ',');
			mysqli_query($conn,$query);
			header("Location:../result.php?quiz=".$quiz_id);
			exit();
		}else{
			echo "<script>alert('You have already attended this quiz!')</script>";
			echo "<script>window.open('../upsc-test-100.php','_self')</script>";
		}
	}
}

function save_question_by_user()
{
	include "../config/db.php";
		$userid= $_SESSION['userid'];
		$answer=mysqli_real_escape_string($conn,$_POST['answer']);
		$question=mysqli_real_escape_string($conn,$_POST['question']);
		$option1=mysqli_real_escape_string($conn,$_POST['option1']);
		$option2=mysqli_real_escape_string($conn,$_POST['option2']);
		$option3=mysqli_real_escape_string($conn,$_POST['option3']);
		$option4=mysqli_real_escape_string($conn,$_POST['option4']);
		$category=mysqli_real_escape_string($conn,$_POST['category']);
		if($category=='blogs'){
			$category='articles';
		}
		// check student quiz already given or not 
		mysqli_query($conn,"insert into created_questions(user_id,question,option1,option2,option3,option4,answer,category) values('$userid','$question','$option1','$option2','$option3','$option4','$answer','$category')");
		$_SESSION['error-class']='alert-success';
		$_SESSION['error-msg']="Question created successfully"; 
		
		if($category=='books'){
			$book_id=mysqli_real_escape_string($conn,$_POST['book']);
			header("Location:../read-book.php?book=".$book_id);	
		}elseif($_POST['category']=='articles'){
			$article_id=mysqli_real_escape_string($conn,$_POST['article']);
			header("Location:../upsc-article.php?s=".$article_id);	
		}elseif($_POST['category']=='blogs'){
			$blog_id=mysqli_real_escape_string($conn,$_POST['blog']);
			header("Location:../upsc-blog.php?s=".$blog_id);	
		}
		elseif($_POST['category']=='newspaper'){
			$news_id=mysqli_real_escape_string($conn,$_POST['newspaper']);
			header("Location:../read-newspaper.php?newspaper=".$news_id);	
		}
		else{
			header("Location:../create-question.php?");
		}
		
		exit();
		
}


function quiz_10_submit_demo()
{
	include "../config/db.php"; 
	$quizID=mysqli_real_escape_string($conn,$_POST['quizID']);
    $ip_address = get_ip_address();
    $sql = mysqli_query($conn,"select * from demo_quiz_attempted where ip_address='$ip_address'");
    if(mysqli_num_rows($sql)>0){
        $_SESSION['error-class']='alert-success';
		$_SESSION['error-msg']="You have already given demo quiz this month. Please <a href='../login.php'>login</a> for more quizs."; 
        header("Location:../daily-quiz-demo.php?quiz=".$quizID);
        die();
    }
    
    
	$answers=$_POST['answer'];
	$marks=0;
	$quiz_array=array('quiz_id'=>$quizID);
	$answers_array=array();
	
	foreach($answers as $key=>$value)
	{
	    $answers_array[$key]=$value;
	}
	
	$his_quiz['quiz']=$quiz_array;
	$his_quiz['answer']=$answers_array;
	
    $_SESSION['nonlogin_quiz'][$quizID]=$his_quiz;
    
    // insert data to save demo quiz by ip address
    
    mysqli_query($conn,"insert into demo_quiz_attempted(ip_address,quiz_id) values('$ip_address','$quizID')");
	 
	header("Location:../daily-quiz-demo.php?quiz=".$quizID);
	exit();
}

//submit mains test
function submit_mains_test()
{
	include "../config/db.php";
	$quiz_id=mysqli_real_escape_string($conn,$_POST['quiz_id']);
    $user_id = $_SESSION['userid'];
  
	$sql = mysqli_query($conn,"select * from main_exam_given_by_students where quiz_id='$quiz_id' and student_id='$user_id'");
	//$data=mysqli_fetch_assoc($sql);
	if(mysqli_num_rows($sql)<=0)
	{
	    $_SESSION['error-class']='alert-warning';
		$_SESSION['error-msg']="Please submit at least one question before submitting the test."; 
		header("Location:../upsc-mains-test.php?quiz=".$quiz_id);
		die();
		
	}else
	{
	    $success = mysqli_query($conn,"insert into main_exam_submitted(quiz_id,student_id) values('$quiz_id','$user_id')");
	    if($success){
		    $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Test submitted successfully, Your marks will be displayed in your profile within few days."; 
	    }else{
	        $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Something went wrong, Please contact admin."; 
	    }
		header("Location:../upsc-mains-test.php?quiz=".$quiz_id);
		die();
	}
}

function update_sessions(){
    session_start();
    
}

function save_mock_test()
{
	include "../config/db.php";
	// check if no answer is selected
	if(!isset($_POST['answer']))
	{
		echo "<script>alert('you need to answer at least one question for submission!')</script>";
		echo "<script>window.open('../mock-exams','_self')</script>";
	}else{
		$userid= $_SESSION['userid'];
		$answers=$_POST['answer'];
		$quiz_id=$_POST['mock_test_id'];
		// check student quiz already given or not
		if(mysqli_num_rows(mysqli_query($conn,"select id from mock_test_by_students where mock_test_id='$quiz_id' and student_id='$userid'"))==0){

			$query="insert into mock_test_by_students(mock_test_id,question_id,answer,student_id) values";
			foreach($answers as $key=>$value)
			{
				$question_id=$key;
				$answer=$value;
				$query.="('$quiz_id','$question_id','$answer','$userid'),";
			}
			$query=rtrim($query, ',');
			mysqli_query($conn,$query);
			header("Location:../mock-result.php?mock=".$quiz_id);
			exit();
		}else{
			echo "<script>alert('You have already attended this quiz!')</script>";
			echo "<script>window.open('../mock-exams','_self')</script>";
		}
	}
}

function save_mix_mock()
{
	include "../config/db.php";
	// check if no answer is selected
	if(!isset($_POST['answer']))
	{
		echo "<script>alert('you need to answer at least one question for submission!')</script>";
		echo "<script>window.open('../mix-mock-exams','_self')</script>";
	}else{
		$userid= $_SESSION['userid'];
		$answers=$_POST['answer'];
		$quiz_id=$_POST['mock_test_id'];
		// check student quiz already given or not
		if(mysqli_num_rows(mysqli_query($conn,"select id from mix_mock_test_by_students where mock_test_id='$quiz_id' and student_id='$userid'"))==0){

			$query="insert into mix_mock_test_by_students(mock_test_id,question_id,answer,student_id) values";
			foreach($answers as $key=>$value)
			{
				$question_id=$key;
				$answer=$value;
				$query.="('$quiz_id','$question_id','$answer','$userid'),";
			}
			$query=rtrim($query, ',');
			mysqli_query($conn,$query);
			header("Location:../mix-mock-result.php?mock=".$quiz_id);
			exit();
		}else{
			echo "<script>alert('You have already attended this quiz!')</script>";
			echo "<script>window.open('../mix-mock-exams','_self')</script>";
		}
	}
}

//mains mocks
function submit_mock_main_question_ans()
{
	include "../config/db.php";
	$sid=$userid;
	$quiz_id=mysqli_real_escape_string($conn,$_POST['quiz_id']);
	$question_id=mysqli_real_escape_string($conn,$_POST['question_id']);
	$test_type=mysqli_real_escape_string($conn,$_POST['test_type']);
	if(mysqli_num_rows(mysqli_query($conn,"select * from mock_main_exam_given_by_students where quiz_id='$quiz_id' and question_id='$question_id' and student_id='$sid'"))>0)
	{
		echo "<script>alert('question already submitted')</script>";
		echo "<script>window.open('../mock-exam-mains-test.php?mock=".$quiz_id."','_self')</script>";
		
		exit();
	}

	if(isset($_POST['write']) && $_POST['write']!='' ){

		$write=mysqli_real_escape_string($conn,$_POST['write']);
		
		mysqli_query($conn,"insert into mock_main_exam_given_by_students(quiz_id,question_id,answer,student_id,check_status) values('$quiz_id','$question_id','$write','$sid','unchecked')");
		header("location:../mock-exam-mains-test.php?mock=".$quiz_id);
		exit();
	}

	if(isset($_FILES['photo']) )
	{ 	
		if($_FILES['photo']['name']!=''){
			$photo=$_FILES['photo']['name'];
	        $file_size =$_FILES['photo']['size'];
	        $file_tmp =$_FILES['photo']['tmp_name'];
	        $exp=explode('.',$photo);
	        $file_ext=strtolower(end($exp));
	        $newfilename = round(microtime(true)) . '.' . end($exp);
	        
	        if(!is_dir( '../images/mock_mains/answersheet') )
            {
              mkdir('../images/mock_mains/answersheet',0755,true);
            }
	        
	       	if(move_uploaded_file($file_tmp,"../images/mock_mains/answersheet/".$newfilename)){
	            mysqli_query($conn,"insert into mock_main_exam_given_by_students(quiz_id,question_id,answersheet,student_id,check_status) values('$quiz_id','$question_id','$newfilename','$sid','unchecked')");
	       	}else{
	       	    echo "<script>alert(' Uploading answersheet failed, try again!')</script>";
	       	}
	        header("location:../mock-exam-mains-test.php?mock=".$quiz_id);
			exit();
    	}
      
	}
}


//submit mains test
function submit_mock_mains_test()
{
	include "../config/db.php";
	$quiz_id=mysqli_real_escape_string($conn,$_POST['quiz_id']);
    $user_id = $_SESSION['userid'];
  
	$sql = mysqli_query($conn,"select * from mock_main_exam_given_by_students where quiz_id='$quiz_id' and student_id='$user_id'");
	//$data=mysqli_fetch_assoc($sql);
	if(mysqli_num_rows($sql)<=0)
	{
	    $_SESSION['error-class']='alert-warning';
		$_SESSION['error-msg']="Please submit at least one question before submitting the test."; 
		header("Location:../mock-exam-mains-test.php?mock=".$quiz_id);
		die();
		
	}else
	{
	    $success = mysqli_query($conn,"insert into mock_main_exam_submitted(quiz_id,student_id) values('$quiz_id','$user_id')");
	    if($success){
		    $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Test submitted successfully, Your marks will be displayed in your profile within few days."; 
	    }else{
	        $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Something went wrong, Please contact admin."; 
	    }
		header("Location:../mock-exam-mains-test.php?mock=".$quiz_id);
		die();
	}
}


//practice question

//submit mains test
function practice_question()
{
	include "../config/db.php";
	$question_id = mysqli_real_escape_string($conn,$_POST['question_id']);
    $user_id = isset($_SESSION['userid']) ? $_SESSION['userid'] : '';
    
    $comment = mysqli_real_escape_string($conn,$_POST['comment']);
    
	$sql = mysqli_query($conn,"select * from practice_questions where id='$question_id' and status='active'");
	
	if(mysqli_num_rows($sql)<=0 || !$user_id)
	{
	    $_SESSION['error-class']='alert-warning';
		 $err="Question is invalid";
		 $url = $home_url."/practice-questions";
		if(!$user_id){
		    $err="Login is required";
		    $url = $home_url."/practice-questions/mains-practice-question.php?id=".$question_id;
		}
		$_SESSION['error-msg']=$err;
		
		header("Location:".$url);
		die();
		
	}else
	{
	    $success = mysqli_query($conn,"insert into practice_questions_comments(question_id,user_id,comment) values('$question_id','$user_id','$comment')");
	    $last_id = mysqli_insert_id($conn);
	    
	    $uploadpath   = $_SERVER['DOCUMENT_ROOT'].'/images/practice_questions/';
        if(!is_dir( $uploadpath ) )
        {
          mkdir($uploadpath,0755,true);
        }
        
        $file_path = "https://upscexamnotes.com/images/practice_questions/";
	    
	    if(isset($_POST['image']) && !empty($_POST['image'])){
    	    foreach($_POST['image'] as $image_base64){
    	        
                $base64string = '';
                $parts        = explode(";base64,", $image_base64);
                $imageparts   = explode("image/", @$parts[0]);
                $imagetype    = $imageparts[1];
                $imagebase64  = base64_decode($parts[1]);
                $image = uniqid() .".". $imagetype;
                $file         = $uploadpath . $image;
                
                file_put_contents($file, $imagebase64);
                
                $file_path = $file_path.$image;
                mysqli_query($conn,"insert into  practice_questions_files(url,comment_id) values('$file_path','$last_id')");
                
            }
	    }
	    
	    if($success){
		    $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Comment Added"; 
	    }else{
	        $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Something went wrong, please try again"; 
	    }
		header("Location:".$home_url."/practice-questions/mains-practice-question.php?id=".$question_id);
		die();
	}
}


function practice_question_reply()
{
    
	include "../config/db.php";
	$comment_id = mysqli_real_escape_string($conn,$_POST['comment_id']);
	$question_id = mysqli_real_escape_string($conn,$_POST['question_id']);
    $user_id = isset($_SESSION['userid']) ? $_SESSION['userid'] : '';
    
    $comment = mysqli_real_escape_string($conn,$_POST['comment']);
    
	$sql = mysqli_query($conn,"select * from practice_questions_comments where id='$comment_id'");
	
	if(mysqli_num_rows($sql)<=0 || !$user_id)
	{
	    
	    $_SESSION['error-class']='alert-warning';
		$err="Comment is invalid";
		$url = $home_url."/practice-questions";
		if(!$user_id){
		    $err="Login is required";
		    $url = $home_url."/practice-questions/mains-practice-question.php?id=".$question_id;
		}
		$_SESSION['error-msg']=$err;
		
		header("Location:".$url);
		die();
		
	}else
	{
	    $success = mysqli_query($conn,"insert into practice_questions_subcomments(comment_id,user_id,comment) values('$comment_id','$user_id','$comment')");
	    if($success){
		    $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Comment Added"; 
	    }else{
	        $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Something went wrong, please try again"; 
	    }
		header("Location:".$home_url."/practice-questions/mains-practice-question.php?id=".$question_id);
		die();
	}
	
}


// paid tests
function save_paid_quiz()
{
	include "../config/db.php";
	// check if no answer is selected
	if(!isset($_POST['answer']))
	{
		echo "<script>alert('you need to answer at least one question for submission!')</script>";
		echo "<script>window.open('../exam-wise/test-series','_self')</script>";
	}else{
		$userid= $_SESSION['userid'];
		$answers=$_POST['answer'];
		$quiz_id=$_POST['quiz_id'];
		// check student quiz already given or not 
		
		if(mysqli_num_rows(mysqli_query($conn,"select id from exam_wise_tests_by_students where quiz_id='$quiz_id' and student_id='$userid'"))==0){

			$query="insert into exam_wise_tests_by_students(quiz_id,question_id,answer,student_id) values";
			foreach($answers as $key=>$value)
			{
				$question_id=$key;
				$answer=$value;
				$query.="('$quiz_id','$question_id','$answer','$userid'),";
			}
			$query=rtrim($query, ',');
			mysqli_query($conn,$query);
			header("Location:../exam-wise/result.php?quiz=".$quiz_id);
			exit();
		}else{
			echo "<script>alert('You have already attended this quiz!')</script>";
			echo "<script>window.open('../exam-wise/test-series','_self')</script>";
		}
	}
}

//save upsc key tests
function save_upsc_notes_quiz()
{
	include "../config/db.php";
	// check if no answer is selected
	if(!isset($_POST['answer']))
	{
		echo "<script>alert('you need to answer at least one question for submission!')</script>";
		echo "<script>window.open('../upsc-keys','_self')</script>";
	}else{
		$userid= $_SESSION['userid'];
		$answers=$_POST['answer'];
		$quiz_id=$_POST['quiz_id'];
		// check student quiz already given or not 
		
		if(mysqli_num_rows(mysqli_query($conn,"select id from upsc_keys_by_students where quiz_id='$quiz_id' and student_id='$userid'"))==0){
            
            //$right=0;
            $positive_marks = $negative_marks = 0;
            
			$query="insert into upsc_keys_by_students(quiz_id,question_id,answer,student_id) values";
			foreach($answers as $key=>$value)
			{
				$question_id=$key;
				$answer=$value;
				$query.="('$quiz_id','$question_id','$answer','$userid'),";
				
				//calculate numbers
				$ans_query=mysqli_query($conn,"select marks,answer from upsc_keys_quest_ans where question_id='$question_id' and quiz_id='$quiz_id'"); //and answer='$answer'
        		if(mysqli_num_rows($ans_query)>0)
        		{
        		    $ans_data = mysqli_fetch_assoc($ans_query);
        		 
        		    if($ans_data['answer']==$answer){
        		        //answer is correct
        		         $positive_marks += $ans_data['marks'];
            			//$right+=1;
            			
            			//subj wise make an array with exam cat id for correct ans
            			if(!empty($ans_data['subject'])){
            			    $correct_ans_subj_array[$ans_data['subject']] = $correct_ans_subj_array[$ans_data['subject']] + 1; 
            			}
        		    }else{
        		        $negative_marks += 0.33;
        		    }
        		   
        		}
			}
			
			$total_marks = $positive_marks - $negative_marks;
        	mysqli_query($conn,"insert into upsc_keys_marks_record(quiz_id,student_id,marks,positive_marks,negative_marks) values('$quiz_id','$userid','$total_marks','$positive_marks','$negative_marks')");
        	
			$query=rtrim($query, ',');
			mysqli_query($conn,$query);
			header("Location:../upsc-keys/analysis-100-quiz.php?quiz=".$quiz_id);
			exit();
		}else{
			echo "<script>alert('You have already attended this quiz!')</script>";
			echo "<script>window.open('../upsc-keys','_self')</script>";
		}
	}
}

function practice_comment_delete()
{
    
	include "../config/db.php";
	$comment_id = mysqli_real_escape_string($conn,$_POST['comment_id']);
	$question_id = mysqli_real_escape_string($conn,$_POST['question_id']);
    $user_id = isset($_SESSION['userid']) ? $_SESSION['userid'] : '';
    
    if(!isset($_SESSION['is_admin'])){
        $url = $home_url."/practice-questions/mains-practice-question.php?id=".$question_id;
        header("Location:".$url);
    }
    

	$sql = mysqli_query($conn,"delete from practice_questions_comments where id='$comment_id'");
	
	if($sql)
	{
	    
	    $_SESSION['error-class']='alert-warning';
		$err="Comment is deleted";
		$url = $home_url."/practice-questions";
		if(!$user_id){
		    $err="Login is required";
		    $url = $home_url."/practice-questions/mains-practice-question.php?id=".$question_id;
		}
		$_SESSION['error-msg']=$err;
		
		header("Location:".$url);
		die();
		
	}else
	{
	    //$success = mysqli_query($conn,"insert into practice_questions_subcomments(comment_id,user_id,comment) values('$comment_id','$user_id','$comment')");
	    
        $_SESSION['error-class']='alert-success';
	    $_SESSION['error-msg']="Something went wrong, please try again"; 
    
		header("Location:".$home_url."/practice-questions/mains-practice-question.php?id=".$question_id);
		die();
	}
	
}

function practice_subcomment_delete()
{
    
	include "../config/db.php";
	$comment_id = mysqli_real_escape_string($conn,$_POST['comment_id']);
	$question_id = mysqli_real_escape_string($conn,$_POST['question_id']);
    $user_id = isset($_SESSION['userid']) ? $_SESSION['userid'] : '';
    
    if(!isset($_SESSION['is_admin'])){
        $url = $home_url."/practice-questions/mains-practice-question.php?id=".$question_id;
        header("Location:".$url);
    }
    

	$sql = mysqli_query($conn,"delete from practice_questions_subcomments where id='$comment_id'");
	
	if($sql)
	{
	    
	    $_SESSION['error-class']='alert-warning';
		$err="Sub Comment is deleted";
		$url = $home_url."/practice-questions";
		if(!$user_id){
		    $err="Login is required";
		    $url = $home_url."/practice-questions/mains-practice-question.php?id=".$question_id;
		}
		$_SESSION['error-msg']=$err;
		
		header("Location:".$url);
		die();
		
	}else
	{
	    //$success = mysqli_query($conn,"insert into practice_questions_subcomments(comment_id,user_id,comment) values('$comment_id','$user_id','$comment')");
	    
        $_SESSION['error-class']='alert-success';
	    $_SESSION['error-msg']="Something went wrong, please try again"; 
    
		header("Location:".$home_url."/practice-questions/mains-practice-question.php?id=".$question_id);
		die();
	}
}

//IAS mains test
function submit_mains_test_ias()
{
	include "../config/db.php";
	$quiz_id=mysqli_real_escape_string($conn,$_POST['quiz_id']);
    $user_id = $_SESSION['userid'];
  
	$sql = mysqli_query($conn,"select * from 2question_module_given_by_students where quiz_id='$quiz_id' and student_id='$user_id'");
	//$data=mysqli_fetch_assoc($sql);
	if(mysqli_num_rows($sql)<=0)
	{
	    $_SESSION['error-class']='alert-warning';
		$_SESSION['error-msg']="Please submit at least one question before submitting the test."; 
		header("Location:../ias-mains-key/ias-mains-test.php?quiz=".$quiz_id);
		die();
		
	}else
	{
	    $success = mysqli_query($conn,"insert into 2question_module_submitted(quiz_id, student_id) values('$quiz_id','$user_id')");
	    if($success){
		    $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Test submitted successfully, Your marks will be displayed in your profile within few days."; 
	    }else{
	        $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Something went wrong, Please contact admin."; 
	    }
		header("Location:../ias-mains-key/ias-mains-test.php?quiz=".$quiz_id);
		die();
	}
}

function submit_main_question_ans_ias()
{
	include "../config/db.php";
	$sid=$userid;
	$quiz_id=mysqli_real_escape_string($conn,$_POST['quiz_id']);
	$question_id=mysqli_real_escape_string($conn,$_POST['question_id']);
	$test_type=mysqli_real_escape_string($conn,$_POST['test_type']);
	if(mysqli_num_rows(mysqli_query($conn,"select * from 2question_module_given_by_students where quiz_id='$quiz_id' and question_id='$question_id' and student_id='$sid'"))>0)
	{
		echo "<script>alert('question already submitted')</script>";
		echo "<script>window.open('../ias-mains-key/ias-test-review.php?quiz=".$quiz_id."','_self')</script>";
		
		exit();
	}

	if(isset($_POST['write']) && $_POST['write']!='' ){

		$write=mysqli_real_escape_string($conn,$_POST['write']);
		
		mysqli_query($conn,"insert into 2question_module_given_by_students(quiz_id,question_id,answer,student_id,check_status) values('$quiz_id','$question_id','$write','$sid','unchecked')");
		header("location:../ias-mains-key/ias-mains-test.php?quiz=".$quiz_id);
		exit();
	}

	if(isset($_FILES['photo']) )
	{ 	
		if($_FILES['photo']['name']!='') {
			$photo=$_FILES['photo']['name'];
	        $file_size =$_FILES['photo']['size'];
	        $file_tmp =$_FILES['photo']['tmp_name'];
	        $exp=explode('.',$photo);
	        $file_ext=strtolower(end($exp));
	        $newfilename = round(microtime(true)) . '.' . end($exp);
	       	move_uploaded_file($file_tmp,"../images/ias-answersheet/".$newfilename); 
	        mysqli_query($conn,"insert into 2question_module_given_by_students(quiz_id,question_id,answersheet,student_id,check_status) values('$quiz_id','$question_id','$newfilename','$sid','unchecked')");
	        header("location:../ias-mains-key/ias-mains-test.php?quiz=".$quiz_id);
			exit();
    	}
      
	}
}

function submit_upsc_key_main_question_ans()
{
	include "../config/db.php";
	$sid=$userid;
	$quiz_id=mysqli_real_escape_string($conn,$_POST['quiz_id']);
	$question_id=mysqli_real_escape_string($conn,$_POST['question_id']);
	$test_type=mysqli_real_escape_string($conn,$_POST['test_type']);
	if(mysqli_num_rows(mysqli_query($conn,"select * from main_keys_given_by_students where quiz_id='$quiz_id' and question_id='$question_id' and student_id='$sid'"))>0)
	{
		echo "<script>alert('question already submitted')</script>";
		echo "<script>window.open('upsc-mains-keys-test.php?quiz=".$quiz_id."','_self')</script>";
		
		exit();
	}

	if(isset($_POST['write']) && $_POST['write']!='' ){

		$write=mysqli_real_escape_string($conn,$_POST['write']);
		
		mysqli_query($conn,"insert into main_keys_given_by_students(quiz_id,question_id,answer,student_id,check_status) values('$quiz_id','$question_id','$write','$sid','unchecked')");
		header("location:upsc-mains-keys-test.php?quiz=".$quiz_id);
		exit();
	}

	if(isset($_FILES['photo']) )
	{
		if($_FILES['photo']['name']!=''){
			$photo=$_FILES['photo']['name'];
	        $file_size =$_FILES['photo']['size'];
	        $file_tmp =$_FILES['photo']['tmp_name'];
	        $exp=explode('.',$photo);
	        $file_ext=strtolower(end($exp));
	        $newfilename = round(microtime(true)) . '.' . end($exp);
	       	move_uploaded_file($file_tmp,"../images/answersheet/".$newfilename); 
	        mysqli_query($conn,"insert into main_keys_given_by_students(quiz_id,question_id,answersheet,student_id,check_status) values('$quiz_id','$question_id','$newfilename','$sid','unchecked')");
	        header("location:upsc-mains-keys-test.php?quiz=".$quiz_id);
			exit();
    	}
      
	}

}

//submit mains test
function submit_upsc_key_mains_test()
{
	include "../config/db.php";
	$quiz_id=mysqli_real_escape_string($conn,$_POST['quiz_id']);
    $user_id = $_SESSION['userid'];
  
	$sql = mysqli_query($conn,"select * from main_keys_given_by_students where quiz_id='$quiz_id' and student_id='$user_id'");
	//$data=mysqli_fetch_assoc($sql);
	if(mysqli_num_rows($sql)<=0)
	{
	    $_SESSION['error-class']='alert-warning';
		$_SESSION['error-msg']="Please submit at least one question before submitting the test."; 
		header("Location:../upsc-mains-keys-test?quiz=".$quiz_id);
		die();
		 
	}else
	{
	    $success = mysqli_query($conn,"insert into main_keys_submitted(quiz_id,student_id) values('$quiz_id','$user_id')");
	    if($success){
		    $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Test submitted successfully, Your marks will be displayed in your profile and here after declaration within few days."; 
	    }else{
	        $_SESSION['error-class']='alert-success';
		    $_SESSION['error-msg']="Something went wrong, Please contact admin."; 
	    }
		header("Location:../upsc-mains-keys-test?quiz=".$quiz_id);
		die();
	}
}
?>

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