PHP判断当前使用的是什么浏览器(推荐)

function userBrowser() { 
 $user_OSagent = $_SERVER['HTTP_USER_AGENT']; 
 if (strpos($user_OSagent, "Maxthon") && strpos($user_OSagent, "MSIE")) { 
 $visitor_browser = "Maxthon(Microsoft IE)"; 
 } elseif (strpos($user_OSagent, "Maxthon 2.0")) { 
 $visitor_browser = "Maxthon 2.0"; 
 } elseif (strpos($user_OSagent, "Maxthon")) { 
 $visitor_browser = "Maxthon"; 
 } elseif (strpos($user_OSagent, "MSIE 9.0")) { 
 $visitor_browser = "MSIE 9.0"; 
 } elseif (strpos($user_OSagent, "MSIE 8.0")) { 
 $visitor_browser = "MSIE 8.0"; 
 } elseif (strpos($user_OSagent, "MSIE 7.0")) { 
 $visitor_browser = "MSIE 7.0"; 
 } elseif (strpos($user_OSagent, "MSIE 6.0")) { 
 $visitor_browser = "MSIE 6.0"; 
 } elseif (strpos($user_OSagent, "MSIE 5.5")) { 
 $visitor_browser = "MSIE 5.5"; 
 } elseif (strpos($user_OSagent, "MSIE 5.0")) { 
 $visitor_browser = "MSIE 5.0"; 
 } elseif (strpos($user_OSagent, "MSIE 4.01")) { 
 $visitor_browser = "MSIE 4.01"; 
 } elseif (strpos($user_OSagent, "MSIE")) { 
 $visitor_browser = "MSIE 较高版本"; 
 } elseif (strpos($user_OSagent, "NetCaptor")) { 
 $visitor_browser = "NetCaptor"; 
 } elseif (strpos($user_OSagent, "Netscape")) { 
 $visitor_browser = "Netscape"; 
 } elseif (strpos($user_OSagent, "Chrome")) { 
 $visitor_browser = "Chrome"; 
 } elseif (strpos($user_OSagent, "Lynx")) { 
 $visitor_browser = "Lynx"; 
 } elseif (strpos($user_OSagent, "Opera")) { 
 $visitor_browser = "Opera"; 
 } elseif (strpos($user_OSagent, "Konqueror")) { 
 $visitor_browser = "Konqueror"; 
 } elseif (strpos($user_OSagent, "Mozilla/5.0")) { 
 $visitor_browser = "Mozilla"; 
 } elseif (strpos($user_OSagent, "Firefox")) { 
 $visitor_browser = "Firefox"; 
 } elseif (strpos($user_OSagent, "U")) { 
 $visitor_browser = "Firefox"; 
 } else { 
 $visitor_browser = "其它"; 
 } 
 return $visitor_browser; 
}

private function getBrowser(){
		$flag=$_SERVER['HTTP_USER_AGENT'];
		$para=array();
		// 检查操作系统
		if(preg_match('/Windows[\d\. \w]*/',$flag, $match)) $para['os']=$match[0];
		if(preg_match('/Chrome\/[\d\.\w]*/',$flag, $match)){
			// 检查Chrome
			$para['browser']=$match[0];
		}elseif(preg_match('/Safari\/[\d\.\w]*/',$flag, $match)){
			// 检查Safari
			$para['browser']=$match[0];
		}elseif(preg_match('/MSIE [\d\.\w]*/',$flag, $match)){
			// IE
			$para['browser']=$match[0];
		}elseif(preg_match('/Opera\/[\d\.\w]*/',$flag, $match)){
			// opera
			$para['browser']=$match[0];
		}elseif(preg_match('/Firefox\/[\d\.\w]*/',$flag, $match)){
			// Firefox
			$para['browser']=$match[0];
		}elseif(preg_match('/OmniWeb\/(v*)([^\s|;]+)/i',$flag, $match)){
			//OmniWeb
			$para['browser']=$match[2];
		}elseif(preg_match('/Netscape([\d]*)\/([^\s]+)/i',$flag, $match)){
			//Netscape
			$para['browser']=$match[2];
		}elseif(preg_match('/Lynx\/([^\s]+)/i',$flag, $match)){
			//Lynx
			$para['browser']=$match[1];
		}elseif(preg_match('/360SE/i',$flag, $match)){
			//360SE
			$para['browser']='360安全浏览器';
		}elseif(preg_match('/SE 2.x/i',$flag, $match)) {
			//搜狗
			$para['browser']='搜狗浏览器';
		}else{
			$para['browser']='unkown';
		}
		return $para;
	}

public function isIE() {
  $isIE = strpos($_SERVER['HTTP_USER_AGENT'],"Triden");
  return $isIE; 
}