Determine whether the current browser is WeChat browser or mobile terminal

Sometimes the project needs to judge the browser and execute different logic for different browsers. You can use JS code to determine whether the browser is a WeChat browser, and use PHP code to determine whether the browser is mobile.

#Sometimes the project needs to judge the browser and execute different logic for different browsers.

1, use JS code to determine whether the browser is a WeChat browser

function is_weixn(){
    var ua = navigator.userAgent.toLowerCase();
    if(ua.match(/MicroMessenger/i)=="micromessenger") {
        return true;
    } else {
        return false;
    }
}

2, use PHP code to determine whether the browser is a mobile terminal

function isMobile()
			{ 
				// 如果有HTTP_X_WAP_PROFILE则一定是移动设备
				if (isset ($_SERVER['HTTP_X_WAP_PROFILE']))
				{
					return "1";
				} 
				// 如果via信息含有wap则一定是移动设备
				if (isset ($_SERVER['HTTP_VIA']))
				{ 
					// 找不到为flase,否则为true
					return stristr($_SERVER['HTTP_VIA'], "wap") ? "1" : "0";
				} 
				// 脑残法，判断手机发送的客户端标志,兼容性有待提高
				if (isset ($_SERVER['HTTP_USER_AGENT']))
				{
					$clientkeywords = array ('nokia',
						'sony',
						'ericsson',
						'mot',
						'samsung',
						'htc',
						'sgh',
						'lg',
						'sharp',
						'sie-',
						'philips',
						'panasonic',
						'alcatel',
						'lenovo',
						'iphone',
						'ipod',
						'blackberry',
						'meizu',
						'android',
						'netfront',
						'symbian',
						'ucweb',
						'windowsce',
						'palm',
						'operamini',
						'operamobi',
						'openwave',
						'nexusone',
						'cldc',
						'midp',
						'wap',
						'mobile'
						); 
					// 从HTTP_USER_AGENT中查找手机浏览器的关键字
					if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT'])))
					{
						return "1";
					} 
				} 
				// 协议法，因为有可能不准确，放到最后判断
				if (isset ($_SERVER['HTTP_ACCEPT']))
				{ 
					// 如果只支持wml并且不支持html那一定是移动设备
					// 如果支持wml和html但是wml在html之前则是移动设备
					if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html'))))
					{
						return "1";
					} 
				} 
				return "0";
			}
		
		$ismobile=isMobile();//判断是否移动端
		if ($ismobile=="1"){
			echo "浏览器为移动端";
			
		}
		
		if ($ismobile=="0"){
			 echo "浏览器不为移动端";
		
		}

The above two pieces of code, brother All tested, true and effective.

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