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Sample Form Processing with Email Validation in PHP
Posted on June 18, 2015 in PHP by Matt Jennings

<?php
session_start();
$errors = array();

// If statement checks if some text has been submitted as an email and isn't null
if(isset($_POST['email']) && $_POST['email'] != NULL)
{

    // If statement below checks in a submitted email is a valid email
    if(!filter_var($_POST['email'], FILTER_VALIDATE_EMAIL))
    {
        array_push($errors, 'This email is not valid');
    }

}
else
{
    array_push($errors, 'Email should not be empty');
}

if(!empty($errors))
{
    $_SESSION['errors'] = $errors;
    header('Location: notes.php');
}
else
{
    echo '<h2>You are logged in!</h2>';
}
?>