How PHP obtains the client browser name and version (based on the Ecshop function) _php tips

This example describes how PHP obtains the client browser name and version. Share to everyone for your reference, specific as follows:

See a function in Ecshop get_user_browser () to get the name and version of the browser. Although the information obtained is simply some information, it is still very useful. The principle is mainly through the $_server[' http_user_agent '] to obtain browser information, and then use the comparison to get the browser information.

The following are the effects of each browser run:

The source code is as follows:

<?php function Get_user_browser () {if (Empty ($_server[' http_user_agent '))) {return ';
  } $agent = $_server[' http_user_agent '];
  $browser = ';
  $browser _ver = '; if (preg_match) ('/msie\s ([^\s|;]
    +/I ', $agent, $regs)) {$browser = ' Internet Explorer ';
  $browser _ver = $regs [1];
    } elseif (Preg_match ('/firefox\/([^\s]+)/I ', $agent, $regs)) {$browser = ' FireFox ';
  $browser _ver = $regs [1]; 
    } elseif (Preg_match ('/maxthon/i ', $agent, $regs)) {$browser = ' (Internet Explorer '. $browser _ver. ') Maxthon ';
  $browser _ver = ';
    } elseif (Preg_match ('/opera[\s|\/] ([^\s]+)/I ', $agent, $regs)) {$browser = ' Opera ';
  $browser _ver = $regs [1]; } elseif (Preg_match ('/omniweb\/v*) ([^\s|;]
    +/I ', $agent, $regs)) {$browser = ' omniweb ';
  $browser _ver = $regs [2];
    } elseif (Preg_match ('/netscape ([\d]*) \/([^\s]+)/I ', $agent, $regs)) {$browser = ' Netscape ';
  $browser _ver = $regs [2]; } ElseIf (Preg_match ('/safari\/([^\s]+)/I ', $agent, $regs)) {$browser = ' safari ';
  $browser _ver = $regs [1]; } elseif (Preg_match ('/netcaptor\s) ([^\s|;]
    +/I ', $agent, $regs)) {$browser = ' (Internet Explorer '. $browser _ver. ') Netcaptor ';
  $browser _ver = $regs [1];
    } elseif (Preg_match ('/lynx\/([^\s]+)/I ', $agent, $regs)) {$browser = ' Lynx ';
  $browser _ver = $regs [1]; } if (!empty ($browser)) {return addslashes ($browser. ' ' .
  $browser _ver);
  else {return ' Unknow browser ';

 } echo Get_user_browser ();?>

I hope this article will help you with your PHP programming.