In cases where Apache's default error pages are not suitable, what are the best practices for creating custom error pages in PHP for user authentication issues?
When Apache's default error pages are not suitable for user authentication issues, it is best to create custom error pages in PHP to provide a more user-friendly and informative experience for the users. This can be achieved by creating a custom error page template in PHP that can be dynamically populated with relevant error messages based on the authentication issue.
<?php
// Custom error page template
$error_message = "You are not authorized to access this page. Please log in to continue.";
?>
<!DOCTYPE html>
<html>
<head>
<title>Error</title>
</head>
<body>
<h1>Error</h1>
<p><?php echo $error_message; ?></p>
</body>
</html>