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105 lines
3.3 KiB
PHP
105 lines
3.3 KiB
PHP
<?php
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/**
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* Slim - a micro PHP 5 framework
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*
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* @author Josh Lockhart <info@slimframework.com>
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* @copyright 2011 Josh Lockhart
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* @link http://www.slimframework.com
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* @license http://www.slimframework.com/license
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* @version 2.4.2
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* @package Slim
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*
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* MIT LICENSE
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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namespace Slim\Http;
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/**
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* HTTP Headers
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*
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* @package Slim
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* @author Josh Lockhart
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* @since 1.6.0
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*/
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class Headers extends \Slim\Helper\Set
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{
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/********************************************************************************
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* Static interface
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*******************************************************************************/
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/**
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* Special-case HTTP headers that are otherwise unidentifiable as HTTP headers.
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* Typically, HTTP headers in the $_SERVER array will be prefixed with
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* `HTTP_` or `X_`. These are not so we list them here for later reference.
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*
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* @var array
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*/
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protected static $special = array(
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'CONTENT_TYPE',
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'CONTENT_LENGTH',
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'PHP_AUTH_USER',
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'PHP_AUTH_PW',
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'PHP_AUTH_DIGEST',
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'AUTH_TYPE'
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);
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/**
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* Extract HTTP headers from an array of data (e.g. $_SERVER)
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* @param array $data
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* @return array
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*/
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public static function extract($data)
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{
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$results = array();
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foreach ($data as $key => $value) {
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$key = strtoupper($key);
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if (strpos($key, 'X_') === 0 || strpos($key, 'HTTP_') === 0 || in_array($key, static::$special)) {
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if ($key === 'HTTP_CONTENT_LENGTH') {
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continue;
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}
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$results[$key] = $value;
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}
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}
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return $results;
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}
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/********************************************************************************
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* Instance interface
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*******************************************************************************/
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/**
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* Transform header name into canonical form
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* @param string $key
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* @return string
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*/
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protected function normalizeKey($key)
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{
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$key = strtolower($key);
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$key = str_replace(array('-', '_'), ' ', $key);
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$key = preg_replace('#^http #', '', $key);
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$key = ucwords($key);
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$key = str_replace(' ', '-', $key);
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return $key;
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}
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}
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