How can PHP scripts handle cases where users mistype email addresses, such as tonyqweb.de or tony@web-de, during form submissions?

When users mistype email addresses during form submissions, PHP scripts can validate the input using regular expressions to ensure it matches the correct email format. If a mistyped email address is detected, the script can prompt the user to correct it before proceeding. 

<?php
$email = $_POST['email'];

if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    echo "Invalid email address. Please enter a valid email address.";
} else {
    // Proceed with form submission
}
?>

Keywords

PHP email validation error handling regular expressions filter_var

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