133 lines
4.3 KiB
PHP
133 lines
4.3 KiB
PHP
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<?php
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2004 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 3.0 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/3_0.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Authors: Aidan Lister <aidan@php.net> |
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// +----------------------------------------------------------------------+
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//
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// $Id: Compat.php,v 1.1 2005/07/23 05:56:02 Tony Exp $
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/**
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* Provides missing functionality in the form of constants and functions
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* for older versions of PHP
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*
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* Optionally, you may simply include the file.
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* e.g. require_once 'PHP/Compat/Function/scandir.php';
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*
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* @category PHP
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* @package PHP_Compat
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* @version $Revision: 1.1 $
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* @author Aidan Lister <aidan@php.net>
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* @static
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*/
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class PHP_Compat
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{
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/**
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* Load a function, or array of functions
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*
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* @param string|array $function The function or functions to load
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* @return bool|array TRUE if loaded, FALSE if not
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*/
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function loadFunction($function)
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{
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// Recursiveness
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if (is_array($function)) {
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$res = array();
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foreach ($function as $singlefunc) {
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$res[$singlefunc] = PHP_Compat::loadFunction($singlefunc);
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}
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return $res;
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}
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// Load function
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if (!function_exists($function)) {
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$file = sprintf('PHP/Compat/Function/%s.php', $function);
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if ((@include_once $file) !== false) {
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return true;
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}
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}
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return false;
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}
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/**
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* Load a constant, or array of constants
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*
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* @param string|array $constant The constant or constants to load
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* @return bool|array TRUE if loaded, FALSE if not
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*/
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function loadConstant($constant)
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{
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// Recursiveness
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if (is_array($constant)) {
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$res = array();
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foreach ($constant as $singleconst) {
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$res[$singleconst] = PHP_Compat::loadConstant($singleconst);
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}
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return $res;
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}
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// Load constant
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$file = sprintf('PHP/Compat/Constant/%s.php', $constant);
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if ((@include_once $file) !== false) {
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return true;
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}
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return false;
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}
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/**
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* Load components for a PHP version
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*
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* @param string $version PHP Version to load
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* @return array An associative array of component names loaded
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*/
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function loadVersion($version = null)
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{
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// Include list of components
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require 'PHP/Compat/Components.php';
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// Include version_compare to work with older versions
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PHP_Compat::loadFunction('version_compare');
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// Init
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$phpversion = phpversion();
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$methods = array(
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'function' => 'loadFunction',
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'constant' => 'loadConstant');
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$res = array();
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// Iterate each component
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foreach ($components as $type => $slice) {
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foreach ($slice as $component => $compversion) {
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if (($version === null &&
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1 === version_compare($compversion, $phpversion)) || // C > PHP
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(0 === version_compare($compversion, $version) || // C = S
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1 === version_compare($compversion, $phpversion))) { // C > PHP
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$res[$type][$component] =
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call_user_func(array('PHP_Compat', $methods[$type]), $component);
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}
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}
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}
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return $res;
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}
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}
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?>
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