Get Browser and Operating System Information with PHP
<?PHPclass OS_BR{
private $agent = "";
private $info = array();
function __construct(){
$this->agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : NULL;
$this->getBrowser();
$this->getOS();
}
function getBrowser(){
$browser = array("Navigator" => "/Navigator(.*)/i",
"Firefox" => "/Firefox(.*)/i",
"Internet Explorer" => "/MSIE(.*)/i",
"Google Chrome" => "/chrome(.*)/i",
"MAXTHON" => "/MAXTHON(.*)/i",
"Opera" => "/Opera(.*)/i",
);
foreach($browser as $key => $value){
if(preg_match($value, $this->agent)){
$this->info = array_merge($this->info,array("Browser" => $key));
$this->info = array_merge($this->info,array(
"Version" => $this->getVersion($key, $value, $this->agent)));
break;
}else{
$this->info = array_merge($this->info,array("Browser" => "UnKnown"));
$this->info = array_merge($this->info,array("Version" => "UnKnown"));
}
}
return $this->info['Browser'];
}
function getOS(){
$OS = array("Windows" => "/Windows/i",
"Linux" => "/Linux/i",
"Unix" => "/Unix/i",
"Mac" => "/Mac/i"
);
foreach($OS as $key => $value){
if(preg_match($value, $this->agent)){
$this->info = array_merge($this->info,array("Operating System" => $key));
break;
}
}
return $this->info['Operating System'];
}
function getVersion($browser, $search, $string){
$browser = $this->info['Browser'];
$version = "";
$browser = strtolower($browser);
preg_match_all($search,$string,$match);
switch($browser){
case "firefox": $version = str_replace("/","",$match);
break;
case "internet explorer": $version = substr($match,0,4);
break;
case "opera": $version = str_replace("/","",substr($match,0,5));
break;
case "navigator": $version = substr($match,1,7);
break;
case "maxthon": $version = str_replace(")","",$match);
break;
case "google chrome": $version = substr($match,1,10);
}
return $version;
}
function showInfo($switch){
$switch = strtolower($switch);
switch($switch){
case "browser": return $this->info['Browser'];
break;
case "os": return $this->info['Operating System'];
break;
case "version": return $this->info['Version'];
break;
case "all" : return array($this->info["Version"],
$this->info['Operating System'], $this->info['Browser']);
break;
default: return "Unkonw";
break;
}
}
}
// using
// create an new instant of OS_BR class
$obj = new OS_BR();
// // if you want to show one by one information then try showInfo() function
// get browser
echo $obj->showInfo('browser');
// get browser version
echo $obj->showInfo('version');
// get Operating system
echo $obj->showInfo('os');
// get all information and it returns an array
echo "<pre>".print_r($obj->showInfo("all"),true)."</pre>";
?>
原文：http://www.codeproject.com/Articles/545047/Get-Browser-and-Operating-System-with-PHP
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