PHP to get the user's browser and operating system Information code _php Tips

1. User access to the server, the use of PHP's super global variable $_server in the Array field [' Http_user_agent '] to get access to all the user information

$_server[' http_user_agent ' string when I visit:

mozilla/5.0 (Windows; U Windows NT 6.1; En-US) applewebkit/533.2 (khtml, like Gecko) chrome/5.0.342.3 safari/533.2

2. Using regular expressions to match the above string, the user's browser operating system information

3.PHP according to the matching string (user's browser operating system information), assign the required CSS files, JS and so on ... Return to the user

My browser's operating system information
Browser:chrome 5.0

Platform:windows 7

The code is as follows:

Copy Code code as follows:

<?php
Displays the browser information for the Access user
Echo ' Browser: '. Determinebrowser ($Agent). ' <BR> ';
Display the operating system platform for accessing users
Echo ' Platform: '. Determineplatform ($Agent). ' <BR> ';

The

//positive expression is more information
function Determinebrowser ($Agent) {
$ than the string in parsing $_server[' http_user_agent] gets access to the user's browser Browseragent= "";  //browser
$browserversion = "";//Browser version
if (Ereg (' MSIE [0-9].[ 0-9]{1,2}) ', $Agent, $version)} {
  $browserversion = $version [1];
  $browseragent = "Internet Explorer";
} else if (Ereg (' opera/) ([0-9]{1,2}.[ 0-9]{1,2}) ', $Agent, $version)} {
  $browserversion = $version [1];
  $browseragent = "Opera";
} else if (Ereg (' firefox/([0-9.] {1,5}) ', $Agent, $version)) {
  $browserversion = $version [1];
  $browseragent = "Firefox";
}else if (ereg (' chrome/) ([0-9.] {1,3}) ', $Agent, $version)) {
  $browserversion = $version [1];
  $browseragent = "Chrome";
}
Else if (Ereg (' safari/([0-9.] {1,3}) ', $Agent, $version)} {
  $browseragent = "Safari";
  $browserversion = "";
}
Else {
$browserversion = "";
$browseragent = "Unknown";
}
return $browseragent. " ". $browserversion;
}

Similarly get information about accessing a user's browser
function Determineplatform ($Agent) {
$browserplatform = = ";
if (eregi (' win ', $Agent) && strpos ($Agent, ' 95 ')) {
$browserplatform = "Windows 95";
}
ElseIf (Eregi (' Win 9x ', $Agent) && strpos ($Agent, ' 4.90 ')) {
$browserplatform = "Windows ME";
}
ElseIf (' Win ', $Agent) && ereg (' Eregi ', $Agent)) {
$browserplatform = "Windows 98";
}
ElseIf (eregi (' win ', $Agent) && eregi (' NT 5.0 ', $Agent)) {
$browserplatform = "Windows 2000";
}
ElseIf (eregi (' win ', $Agent) && eregi (' NT 5.1 ', $Agent)) {
$browserplatform = "Windows XP";
}
ElseIf (eregi (' win ', $Agent) && eregi (' NT 6.0 ', $Agent)) {
$browserplatform = "Windows Vista";
}
ElseIf (eregi (' win ', $Agent) && eregi (' NT 6.1 ', $Agent)) {
$browserplatform = "Windows 7";
}
ElseIf (' Win ', $Agent) && ereg (' Eregi ', $Agent)) {
$browserplatform = "Windows 32";
}
ElseIf (eregi (' win ', $Agent) && eregi (' NT ', $Agent)) {
$browserplatform = "Windows NT";
}elseif (eregi (' Mac OS ', $Agent)) {
$browserplatform = "Mac OS";
}
ElseIf (eregi (' Linux ', $Agent)) {
$browserplatform = "Linux";
}
ElseIf (eregi (' Unix ', $Agent)) {
$browserplatform = "Unix";
}
ElseIf (Eregi (' Sun ', $Agent) && eregi (' OS ', $Agent)) {
$browserplatform = "SunOS";
}
ElseIf (eregi (' IBM ', $Agent) && eregi (' OS ', $Agent)) {
$browserplatform = "IBM os/2";
}
ElseIf (eregi (' Mac ', $Agent) && eregi (' PC ', $Agent)) {
$browserplatform = "Macintosh";
}
ElseIf (eregi (' PowerPC ', $Agent)) {
$browserplatform = "PowerPC";
}
ElseIf (eregi (' AIX ', $Agent)) {
$browserplatform = "AIX";
}
ElseIf (eregi (' HPUX ', $Agent)) {
$browserplatform = "HPUX";
}
ElseIf (eregi (' NetBSD ', $Agent)) {
$browserplatform = "NetBSD";
}
ElseIf (eregi (' BSD ', $Agent)) {
$browserplatform = "BSD";
}
ElseIf (Ereg (' OSF1 ', $Agent)) {
$browserplatform = "OSF1";
}
ElseIf (Ereg (' IRIX ', $Agent)) {
$browserplatform = "IRIX";
}
ElseIf (eregi (' FreeBSD ', $Agent)) {
$browserplatform = "FreeBSD";
}
if ($browserplatform = = ") {$browserplatform =" Unknown ";}
return $browserplatform;
}

?>