Get http status message from code.

status_message_from_code.php

<?php
/**
 * Get http status message from code
 *
 * @param number $code
 * @return string
 */
function status_message_from_code ($code = NULL) {
    switch ($code) {
        case 100:
            return 'Continue';
        case 101:
            return 'Switching Protocols';
        case 102:
            return 'Processing';
        case 200:
            return 'OK';
        case 201:
            return 'Created';
        case 202:
            return 'Accepted';
        case 203:
            return 'Non-Authoritative Information';
        case 204:
            return 'No Content';
        case 205:
            return 'Reset Content';
        case 206:
            return 'Partial Content';
        case 207:
            return 'Multi-Status';
        case 208:
            return 'Already Reported';
        case 226:
            return 'IM Used';
        case 300:
            return 'Multiple Choices';
        case 301:
            return 'Moved Permanently';
        case 302:
            return 'Found';
        case 303:
            return 'See Other';
        case 304:
            return 'Not Modified';
        case 305:
            return 'Use Proxy';
        case 306:
            return '(Unused)';
        case 307:
            return 'Temporary Redirect';
        case 308:
            return 'Permanent Redirect';
        case 400:
            return 'Bad Request';
        case 401:
            return 'Unauthorized';
        case 402:
            return 'Payment Required';
        case 403:
            return 'Forbidden';
        case 404:
            return 'Not Found';
        case 405:
            return 'Method Not Allowed';
        case 406:
            return 'Not Acceptable';
        case 407:
            return 'Proxy Authentication Required';
        case 408:
            return 'Request Timeout';
        case 409:
            return 'Conflict';
        case 410:
            return 'Gone';
        case 411:
            return 'Length Required';
        case 412:
            return 'Precondition Failed';
        case 413:
            return 'Payload Too Large';
        case 414:
            return 'URI Too Long';
        case 415:
            return 'Unsupported Media Type';
        case 416:
            return 'Range Not Satisfiable';
        case 417:
            return 'Expectation Failed';
        case 418:
            return 'I\'m a teapot';
        case 421:
            return 'Misdirected Request';
        case 422:
            return 'Unprocessable Entity';
        case 423:
            return 'Locked';
        case 424:
            return 'Failed Dependency';
        case 426:
            return 'Upgrade Required';
        case 428:
            return 'Precondition Required';
        case 429:
            return 'Too Many Requests';
        case 431:
            return 'Request Header Fields Too Large';
        case 451:
            return 'Unavailable For Legal Reasons';
        case 500:
            return 'Internal Server Error';
        case 501:
            return 'Not Implemented';
        case 502:
            return 'Bad Gateway';
        case 503:
            return 'Service Unavailable';
        case 504:
            return 'Gateway Timeout';
        case 505:
            return 'HTTP Version Not Supported';
        case 506:
            return 'Variant Also Negotiates';
        case 507:
            return 'Insufficient Storage';
        case 508:
            return 'Loop Detected';
        case 510:
            return 'Not Extended';
        case 511:
            return 'Network Authentication Required';
        default:
            return '';
    }
}