<?php
	
class CHTTPUserAgent
	{
	var $msType;
	var $masBrowserCap;
	var $masBrowserScreen;
	var $msUserAgent;

	function CHTTPUserAgent()
		{
		$this->msUserAgent=getenv("HTTP_USER_AGENT");;
		
		$this->gParseUserAgent();

		}
	function gbIs2k()
		{
		if($this->masBrowserCap["2k.qs.16"]===true)
			{
			return true;
			}
		return false;
		}
	function gbIsPPC()
		{
		if($this->masBrowserCap["ppc"]===true)
			return true;
		return false;
		}
	function gasGetScreenResolution()
		{
		if(isset($this->masBrowserScreen["X"]))
			return $this->masBrowserScreen;
		return false;
		}
	function gParseUserAgent()
		{
		$infoStart=strpos($this->msUserAgent,chr(40));
		$infoEnde=strpos($this->msUserAgent,chr(41));
		if($sStart!==false)
			{
			$this->msType=trim(substr($this->msUserAgent,0,$infoStart));
			if($infoEnde!==false)
				{
				$infoLength=$infoEnde-$infoStart-1;
				$sInfo=substr($this->msUserAgent,$infoStart+1,$infoLength);
				$asInfo=explode(chr(59),$sInfo);
				if(is_array($asInfo))
					{
					foreach($asInfo as $sInfo)
						{
						$sInfo=trim($sInfo);
						$asData=explode(chr(32),$sInfo);
						if(sizeof($asData)>1)
							{
							$sName=array_shift($asData);
							$sValue=join(chr(32),$asData);
							$this->masBrowserCap[$sName]=$sValue;					
							}
						else
							{
							if(strpos($sInfo,chr(120))===false)
								{
								$sInfo=strtolower($sInfo);
								$this->masBrowserCap[$sInfo]=true;
								}
							else
								{
								$asData=explode(chr(120),$sInfo);
								$this->masBrowserScreen["X"]=$asData[0];
								$this->masBrowserScreen["Y"]=$asData[1];
								}
							}
						}
					}
				}
			}
		
		}	
	}