In the context of PHP mail validation, what is the significance of using absolute paths in the header location for redirection?

When redirecting after validating an email in PHP, using absolute paths in the header location ensures that the redirection works correctly across different pages and directories within the website. Relative paths may not work consistently, especially when the validation script is included or required in different files. Absolute paths provide a reliable way to redirect users to the desired location after email validation.

// Validate email and redirect with absolute path
if ($email_validated) {
    header("Location: http://www.example.com/success.php");
    exit;
}