What are some common challenges faced when using PHP to redirect website traffic based on server status?

One common challenge when using PHP to redirect website traffic based on server status is handling different HTTP status codes and redirecting users accordingly. To solve this, you can use the header() function in PHP to send the appropriate HTTP header for redirection.

$status = http_response_code();
if($status == 503) {
    header("Location: maintenance.php");
    exit();
} elseif($status == 404) {
    header("Location: notfound.php");
    exit();
} elseif($status == 500) {
    header("Location: error.php");
    exit();
}