How can PHP developers ensure that their custom error pages are properly functioning and returning the correct status codes?

To ensure that custom error pages are properly functioning and returning the correct status codes in PHP, developers can use the header() function to set the appropriate status code before outputting the custom error page content. This ensures that the server responds with the correct HTTP status code, such as 404 for a not found error. 

<?php
// Set the HTTP status code
http_response_code(404);

// Output custom error page content
echo "<h1>404 Not Found</h1>";
echo "<p>The page you are looking for could not be found.</p>";
?>

Keywords

PHP custom error pages status codes error handling debugging

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