UASystem.php

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<?php
 
 
namespace Ubiquity\utils\base;
 
class UASystem {
    
    const BROWSERS=['MSIE'=>'Internet Explorer','Firefox'=>'Mozilla Firefox','Edg'=>'Microsoft Edge','OPR'=>'Opera','Chrome'=>'Google Chrome','Safari'=>'Apple Safari','Netscape'=>'Netscape'];
 
    const SYSTEMS=['linux'=>'linux','mac'=>'macintosh|mac os x','windows'=>'windows|win32'];
 
    private static $browserInfos;
 
    private static function getBrowserInfos() {
        $userAgent = $_SERVER['HTTP_USER_AGENT'];
        $browserName = 'Unknown';
        $platform = self::getPlatformFromUserAgent($userAgent);
        $version = '';
 
        foreach (self::BROWSERS as $k=>$name){
            if(\preg_match("/$k/i",$userAgent)) {
                $browserName = $name;
                $ub = $k;
                break;
            }
        }
 
        $known = ['Version', $ub, 'other'];
        $pattern = '#(?<browser>' . join('|', $known) . ')[/ ]+(?<version>[0-9.|a-zA-Z.]*)#';
        \preg_match_all($pattern, $userAgent, $matches);
 
        $i = \count($matches['browser']);
        if ($i != 1) {
            if (\strripos($userAgent,'Version') < \strripos($userAgent,$ub)){
                $version= $matches['version'][0]??null;
            }
            else {
                $version= $matches['version'][1]??null;
            }
        }
        else {
            $version= $matches['version'][0]??null;
        }
 
        $version??='?';
 
        return [
            'userAgent' => $userAgent,
            'name'      => $browserName,
            'version'   => $version,
            'platform'  => $platform,
            'pattern'   => $pattern
        ];
    }
 
    private static function getPlatformFromUserAgent(string $userAgent):string{
        $platform='Unknown';
        foreach (self::SYSTEMS as $name=>$reg){
            if (\preg_match("/$reg/i", $userAgent)) {
                $platform = $name;
            }
        }
        return $platform;
    }
    private static function _getBrowser():array{
        return self::$browserInfos??=self::getBrowserInfos();
    }
    public static function getBrowserComplete():string{
        $b=self::_getBrowser();
        return $b['name'].' '.$b['version'];
    }
 
    public static function getBrowserName():string{
        return self::_getBrowser()['name'];
    }
 
    public static function getBrowserVersion():string{
        return self::_getBrowser()['version'];
    }
 
    public static function getPlatform():string{
        return self::_getBrowser()['platform'];
    }
}