config.php

<?php

     include 'config.php';
     if(isset($_POST['username']) && isset($_POST['password']))
     {
    $result='';
    $username = $_POST['username'];
        $password = $_POST['password'];
        $sql = 'SELECT * FROM tbl_login WHERE  email = :username AND password = :password';
        $stmt = $conn->prepare($sql);
        $stmt->bindParam(':username', $username, PDO::PARAM_STR);
        $stmt->bindParam(':password', $password, PDO::PARAM_STR);
        $stmt->execute();
        if($stmt->rowCount())
        {
        $result="true";
        }
        elseif(!$stmt->rowCount())
        {
        $result="false";
        }
    echo $result;
     }

?>