'HTTP_SUCCESS', 201 => 'HTTP_CREATED', 202 => 'HTTP_ACCEPTED', 204 => 'HTTP_NO_CONTENT', 205 => 'HTTP_RESET_CONTENT', 206 => 'HTTP_PARTIAL_CONTENT', 208 => 'HTTP_ALREADY_REPORTED', // 300's (redirections) 301 => 'HTTP_MOVED_PERMANENTLY', 304 => 'HTTP_NOT_MODIFIED', 307 => 'HTTP_TEMP_REDIRECT', 308 => 'HTTP_PERMANENT_REDIRECT', // 400's (app got the request but couldn't process it successfully, coding error) 400 => 'HTTP_BAD_REQUEST', 401 => 'HTTP_UNAUTHORIZED', 402 => 'HTTP_PAYMENT_REQUIRED', 403 => 'HTTP_FORBIDDEN', 404 => 'HTTP_NOT_FOUND', 405 => 'HTTP_METHOD_NOT_ALLOWED', 406 => 'HTTP_NOT_ACCEPTABLE', 408 => 'HTTP_TIMEOUT', 409 => 'HTTP_CONFLICT', 410 => 'HTTP_GONE', 412 => 'HTTP_PRECONDITION_FAILED', 413 => 'HTTP_PAYLOAD_TOO_LARGE', 415 => 'HTTP_UNSUPPORTED_MEDIA', 413 => 'HTTP_TOO_LARGE', 417 => 'HTTP_EXPECTATION_FAIL', 418 => 'HTTP_TEAPOT', 422 => 'HTTP_UNPROCESSABLE_ENTITY', 423 => 'HTTP_LOCKED', 424 => 'HTTP_FAILED_DEPENDENCY', 236 => 'HTTP_UPGRADE_REQUIRED', 428 => 'HTTP_PRECONDITION_REQUIRED', 429 => 'HTTP_TOO_MANY_REQUESTS', 451 => 'HTTP_GAG_ORDER', // 500's (server-level problem, process died or configuration is incorrect) 500 => 'HTTP_SERVER_ERROR', 501 => 'HTTP_NOT_IMPLEMENTED', 503 => 'HTTP_UNAVAILABLE', 530 => 'HTTP_SUSPENDED', ); foreach ( $codes as $code => $slug ) { if ( ! defined( $slug ) ) { define( $slug, $code ); } }