Email Validation

If user enter invalid email we can validate it using filter_var() function using previous example
http://php-guidelines.blogspot.com/2015/02/form-validation.html:

replace following if statement  of email :

<?php

 if (empty($_POST["email"])) {

    $emailErr = "Email is required";

  } else {

    $email = test_input($_POST["email"]);

    // check if e-mail address is valid or not

    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {

      $emailErr = "Invalid email format"; 

    }

  }

?>

Output Print