forgot_id.php

<?php
try{
   ini_set( "display_errors", 0); 
    session_destroy();
    
include 'db_init.php';
include 'forgot_id.html';
$link=new mysqli('localhost','root','','councelling');
if($link->connect_error)
    throw new Exception("Connection Error.");
$email=$_POST["email"];
//print_r($email);
$stmt=$link->prepare("select username from student where mail=?");
$stmt->bind_param("s", $email);
$stmt->execute();
$result=$stmt->get_result();
$out=$result->fetch_array();
//print_r($out);
$username=$out["username"];

if(!$username==""){
    echo "<script>document.getElementById('mail').value=' ".$email."';document.getElementById('id').value=' ".$username."';</script>";
    //$_POST["username"]=$username;
}
else
    throw new Exception("Invalid E-mail.");




} catch (Exception $ex) {
          echo '<script>alert("'.$ex->getMessage().'")</script>'; 
}
?>