98 lines
4.1 KiB
PHP
98 lines
4.1 KiB
PHP
<?php
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/**
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Standalone version of get_browser() in PHP
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http://www.php.net/manual/function.get-browser.php
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Detection of the capacities of a Web browser client.
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Requires a compatible browscap.ini database,
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such as php_browscap.ini on
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http://browsers.garykeith.com/downloads.asp
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Interface:
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- function get_browser_local($user_agent=null,$return_array=false,$db='./browscap.ini',$cache=false)
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[Implied] $user_agent=null: The signature of the browser to be analysed. If this parameter is left to null, then it uses $_SERVER['HTTP_USER_AGENT'].
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[Implied] $return_array=false: When this parameter is activated, the function returns an array instead of an object.
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[Implied] $db='./browscap.ini': Allows specifying the path of the browscap.ini database, otherwise assumes that it is in the current directory.
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[Implied] $cache=false: Specify if the database can be kept in memory, to improve performances when querying this function more than once.
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Returns: An object (or an array, if asked to do so) with the capacities of the browser.
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Typical use:
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{
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if (get_cfg_var('browscap'))
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$browser=get_browser(); //If available, use PHP native function
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else
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{
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require_once('php-local-browscap.php');
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$browser=get_browser_local();
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}
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print_r($browser);
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}
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Version 1.5, 2010-02-06, http://alexandre.alapetite.fr/doc-alex/php-local-browscap/
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------------------------------------------------------------------
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Written by Alexandre Alapetite, http://alexandre.alapetite.fr/cv/
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Copyright 2005-2010, Licence: Creative Commons "Attribution-ShareAlike 2.0 France" BY-SA (FR),
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http://creativecommons.org/licenses/by-sa/2.0/fr/
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http://alexandre.alapetite.fr/divers/apropos/#by-sa
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- Attribution. You must give the original author credit
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- Share Alike. If you alter, transform, or build upon this work,
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you may distribute the resulting work only under a license identical to this one
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(Can be included in GPL/LGPL projects)
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- The French law is authoritative
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- Any of these conditions can be waived if you get permission from Alexandre Alapetite
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- Please send to Alexandre Alapetite the modifications you make,
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in order to improve this file for the benefit of everybody
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If you want to distribute this code, please do it as a link to:
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http://alexandre.alapetite.fr/doc-alex/php-local-browscap/
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*/
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$browscapIni=null; //Cache
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$browscapPath=''; //Cached database
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function _sortBrowscap($a,$b)
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{
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$sa=strlen($a);
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$sb=strlen($b);
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if ($sa>$sb) return -1;
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elseif ($sa<$sb) return 1;
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else return strcasecmp($a,$b);
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}
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function _lowerBrowscap($r) {return array_change_key_case($r,CASE_LOWER);}
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function get_browser_local($user_agent=null,$return_array=false,$db='./browscap.ini',$cache=false)
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{//http://alexandre.alapetite.fr/doc-alex/php-local-browscap/
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//Get php_browscap.ini on http://browsers.garykeith.com/downloads.asp
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if (($user_agent==null)&&isset($_SERVER['HTTP_USER_AGENT'])) $user_agent=$_SERVER['HTTP_USER_AGENT'];
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global $browscapIni;
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global $browscapPath;
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if ((!isset($browscapIni))||(!$cache)||($browscapPath!==$db))
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{
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$browscapIni=defined('INI_SCANNER_RAW') ? parse_ini_file($db,true,INI_SCANNER_RAW) : parse_ini_file($db,true);
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$browscapPath=$db;
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uksort($browscapIni,'_sortBrowscap');
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$browscapIni=array_map('_lowerBrowscap',$browscapIni);
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}
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$cap=null;
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foreach ($browscapIni as $key=>$value)
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{
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if (($key!='*')&&(!array_key_exists('parent',$value))) continue;
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$keyEreg='^'.str_replace(
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array('\\','.','?','*','^','$','[',']','|','(',')','+','{','}','%'),
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array('\\\\','\\.','.','.*','\\^','\\$','\\[','\\]','\\|','\\(','\\)','\\+','\\{','\\}','\\%'),
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$key).'$';
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if (preg_match('%'.$keyEreg.'%i',$user_agent))
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{
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$cap=array('browser_name_regex'=>strtolower($keyEreg),'browser_name_pattern'=>$key)+$value;
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$maxDeep=8;
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while (array_key_exists('parent',$value)&&array_key_exists($parent=$value['parent'],$browscapIni)&&(--$maxDeep>0))
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$cap+=($value=$browscapIni[$parent]);
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break;
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}
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}
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if (!$cache) $browscapIni=null;
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return $return_array ? $cap : (object)$cap;
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}
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