PHP to determine what channel to open the two-dimensional code

This time to everyone to bring PHP to judge from what channel open two-dimensional code, PHP judge from what channels to open the two-dimensional code of note what, the following is the actual case, together to see.

#问题

Problems encountered in the project if the user is using Access.

Then a friendly tip " how to open with a browser/tell users to open with a browser "

Scheme

UserAgent is a browser identifier with some customer information. such as browser kernel, operating system, etc.

Access to the Web page is also a browser, it also has UA. Then the UA will be able to tell if it's being accessed.

$ua = $_server[' http_user_agent '); Micromessenger is the Android/iphone version of the//windows Phone is the winphone version of the belt (this logo will hurt Winphone ordinary browser access) if (Strpos ($ua, ' Micromessenger ') = = False | | Strpos ($ua, ' Windows Phone ') = = False) {  echo "from normal browser access";} else{  echo "from browser access";}

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