class-3-part-20

<?php
/*
 * Filter Variable
 * https://www.w3schools.com/php/php_ref_filter.asp
 */

$email = "xossarif@gmail.com";

if (filter_var($email, FILTER_VALIDATE_EMAIL)){
    //echo "This is a valid email";
}else{
   // echo "This is not valid Email address";
}

echo "<br/>";
$int = 213243.23234;

if (filter_var($int, FILTER_VALIDATE_INT)){
    //echo "this is Int";
}else{
    //echo "this is not";
}
echo "<br/>";

if (isset($_REQUEST['submit'])){
    $email = $_REQUEST['email'];
    if (isset($email)){
        $email_data_sanitize = filter_var($email, FILTER_SANITIZE_EMAIL);
        $email_data_validate = filter_var($email_data_sanitize, FILTER_VALIDATE_EMAIL);

        if ($email_data_validate && $email_data_validate){
            echo "$email is correct";
        }else{
            $error =  "$email is Incorrect";
        }

    }
}

?>

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
<form action="" method="POST">
    <input type="text" placeholder="Email" name="email"> <br/>
    <input type="submit" name="submit" value="submit">
</form>
<p><?php if (isset($error)){
        echo $error;
    } ?></p>

</body>
</html>