PHP 如何检测手机浏览器(代码)

越来越多的人使用移动设备浏览互联网网页，很多网站也在这方面下了很大功夫，作为PHP语言编写的网站要更好的展示给网民，就要判断一下浏览器，本文教你如何用php检测手机浏览器，直接看代码吧！
<?php   
 function is_mobile(){   
 
    
 
     // returns true if one of the specified mobile browsers is detected   
 
     
 
    $regex_match="/(nokia|iphone|android|motorola|^mot\-|softbank|foma|docomo|kddi|up\.browser|up\.link|";   
 
     $regex_match.="htc|dopod|blazer|netfront|helio|hosin|huawei|novarra|CoolPad|webos|techfaith|palmsource|";   
 
    $regex_match.="blackberry|alcatel|amoi|ktouch|nexian|samsung|^sam\-|s[cg]h|^lge|ericsson|philips|sagem|wellcom|bunjalloo|maui|";       
 
    $regex_match.="symbian|smartphone|midp|wap|phone|windows ce|iemobile|^spice|^bird|^zte\-|longcos|pantech|gionee|^sie\-|portalmmm|";   
 
     $regex_match.="jig\s browser|hiptop|^ucweb|^benq|haier|^lct|opera\s*mobi|opera\*mini|320x320|240x320|176x220";   
 
    $regex_match.=")/i";           
 
     return isset($_SERVER['HTTP_X_WAP_PROFILE']) or isset($_SERVER['HTTP_PROFILE']) or preg_match($regex_match, strtolower($_SERVER['HTTP_USER_AGENT']));   
 
 }   
 
     
 
 /*   
 
 allow the user a way to force either the full or mobile versions of the site - use a GET parameter on requests:   
 
    
 
 include likes to both versions of the site w/ the special force mode parameters, 'mobile' and 'full':   
 
    
 
 <a href="?mobile">View Mobile Site</a>   
 
 <a href="?full">View Full Site</a>   
 
    
 
 Always check for 'mobile' or 'full' parameters before accounting for any User-Agent conditions:   
 
 */  
 
     
 
 if ($_GET['mobile']) {   
 
  $is_mobile = true;   
 
 }   
 
      
 
 if ($_GET['full']) {   
 
 $is_mobile = false;   
 
 }   
 
 if($is_mobile) {   
 
    //it's a mobile browser, do something   
 
     header("Location: ");   
 
} else {   
 
     //it's not a mobile browser, do something else   
 
     header("Location: ");   
 
     // or instead of a redirect, simply build html below   
 
}   
 
?>