Example of PHP determining whether the page is opened by WeChat (opening the webpage by WeChat)_PHP tutorial

Copy code The code is as follows:

$user_agent = $_SERVER['HTTP_USER_AGENT'];
if (strpos( $user_agent, 'MicroMessenger') === false) {
// Non-WeChat browsers are prohibited from browsing
echo "HTTP/1.1 401 Unauthorized";
} else {
// WeChat browser , allow access
echo "MicroMessenger";
// Get version number
preg_match('/.*?(MicroMessenger/([0-9.]+))s*/', $user_agent, $matches);
echo '
Version:'.$matches[2];
}

Well, I can’t refute it directly, but this is indeed very unreliable.
Let’s talk about it with data.
The following are the HTTP_USER_AGENT information for Android, WinPhone, and iPhone.

Copy code The code is as follows:

"HTTP_USER_AGENT": "Mozilla/5.0 (Linux; U; Android 4.1; zh- cn; Galaxy Nexus Build/Wind-Galaxy Nexus-V1.2) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 MicroMessenger/5.0.1.352",
"HTTP_USER_AGENT": "Mozilla/5.0 ( compatible; MSIE 10.0; Windows Phone 8.0; Trident/6.0; IEMobile/10.0; ARM; Touch; NOKIA; Nokia 920T)",
"HTTP_USER_AGENT": "Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_3 like Mac OS X ) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B329 MicroMessenger/5.0.1",

You can see that WinPhone does not have MicroMessenger at all, so it is impossible to judge. In fact, the userAgent judgment is very fake, so I think we should use js to judge whether WeixinJSBridge exists, and then use ajax to php
php detects it and returns the real one Page information, add a "Loading..." during the period, it will be very harmonious. Of course, ajax can also be deceived, but compared to userAgent deception, it is a little more troublesome.
But our purpose is I will not write the specific code to detect whether it is the WeChat side, not a deception issue, because I hate the kind of arbitrary copying and pasting the most, and sometimes the code is filtered and part of it is ignored.

http://www.bkjia.com/PHPjc/761017.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/761017.htmlTechArticleCopy the code as follows: $user_agent = $_SERVER['HTTP_USER_AGENT']; if (strpos($user_agent, ' MicroMessenger') === false) { // Non-WeChat browsers prohibit browsing echo "HTTP/1.1 401 Un...