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Homephp教程php手册js 和 php 判断是否是 android 设备

JavaScript 判断方法是直接搜索客户端的user agent字符串中的 Android 字符串:

if(navigator.userAgent.match(/Android/i)) {  
	    alert('Is Android !');  
	} else {  
	    alert('Is Not Android !');  
	} 

PHP 方法判断,同样可以搜索 user agent 中是否有 Android 关键字:

if(strstr($_SERVER['HTTP_USER_AGENT'],'Android')) {  
	    echo 'Is Android !';  
	} else {  
	    echo 'Is Not Android !';  
	} 

再来介绍一下关于php根据HTTP_USER_AGENT 判断用户浏览器类型:

function browsers(){ 
	   global $HTTP_USER_AGENT ; 
	   if (isset($HTTP_USER_AGENT)){ 
	    $sAgent = $HTTP_USER_AGENT; 
	   }else{ 
	    $sAgent = $_SERVER['HTTP_USER_AGENT']; 
	   } 
	   if (strpos($sAgent,'MSIE') !== false && strpos($sAgent,'mac') === false && strpos($sAgent,'Opera') === false){ 
	    $iVersion = (float)substr($sAgent,strpos($sAgent,'MSIE') + 5,3); 
	    return ($iVersion >= 5.5) ; 
	   }else if (strpos($sAgent,'Gecko/') !== false){ 
	    $iVersion = (int)substr($sAgent,strpos($sAgent,'Gecko/') + 6,8); 
	    return ($iVersion >= 20030210) ; 
	   }else{ 
	    return false; 
	   } 
	  } 

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