一下使用php判斷瀏覽器類型的方法發(fā)現(xiàn)解決這個問題很簡單

今天的項目需要根據(jù)用戶的瀏覽器類型進行不同的處理，所以稍微研究了一下使用php判斷瀏覽器類型的方法，發(fā)現(xiàn)解決這個問題其實很簡單，只要熟悉常量$ [''] 用法就行。接下來我們寫一個php通過$['']判斷瀏覽器類型的方法。

function my_get_browser(){
	if(empty($_SERVER['HTTp_USER_AGENT'])){
		return '命令行，機器人來了！';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'MSIE 9.0')){
		return 'Internet Explorer 9.0';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'MSIE 8.0')){
		return 'Internet Explorer 8.0';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'MSIE 7.0')){
		return 'Internet Explorer 7.0';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'MSIE 6.0')){
		return 'Internet Explorer 6.0';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'Firefox')){
		return 'Firefox';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'Chrome')){
		return 'Chrome';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'Safari')){
		return 'Safari';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'Opera')){
		return 'Opera';
	}
	if(false!==strpos($_SERVER['HTTp_USER_AGENT'],'360SE')){
		return '360SE';
	}
}

這里主要使用$['']，這個常量用來檢查頁面的訪問者使用的是什么操作系統(tǒng)（包括版本號）、瀏覽器（包括版本號）和用戶個人偏好。用法非常簡單。您可以通過在程序中打印出來來理解它。

另外，pHp還可以使用pHp系統(tǒng)函數(shù)()函數(shù)來判斷瀏覽器類型，它會返回用戶瀏覽器的一些性能數(shù)據(jù)。此功能通過查詢用戶的 .ini 文件來衡量用戶瀏覽器的性能。如果成功，該函數(shù)返回一個包含用戶瀏覽器信息的對象或數(shù)組，如果失敗，則返回。

語法

(,)

該函數(shù)有兩個參數(shù)，參數(shù)含義解釋如下：

可選的。指定 HTTp 用戶代理的名稱。默認值為 $ 的值。您可以通過設(shè)置 NULL 來繞過此參數(shù)。

可選的。如果此參數(shù)設(shè)置為 true，則此函數(shù)將返回一個數(shù)組而不是一個對象。

對于php通過$['']獲取的瀏覽器信息，我們可以通過下面的例子來了解：

";
$browser = get_browser(null,true);
print_r($browser);
?>

結(jié)果將輸出：

/4.0

(; MSIE 6.0; NT 5.1; SV1; .NET CLR 1.1.4322)

(

[] => ^/.\.0

(; msie 6\.0.*;.* nt 5\.1.*\.net clr.*).*$

[] => /?.0

(; MSIE 6.0*;* NT 5.1*.NET CLR*)*

[] => IE 6.0

[] =>

[] => 1

[] => IE

[] => 6.0

[] => 6

[] => 0

[CSS] => 2

[] => 1

[] => 1

[] => 1

[] => 1

[] => 1

[] => 1

[] => 1

[] => 1

[] => 1

[cdf] => 1

[aol] =>

[測試版] =>

[] =>

[] =>

[] =>

[wap] =>

[ak] =>

[sk] =>

)

但是php獲取服務(wù)器ie版本，通過pHp()函數(shù)獲取客戶端瀏覽器的相關(guān)信息是有條件的。如果直接使用，一般會報如下錯誤：

:() [.get-]: ini 中沒有設(shè)置......

通過查詢php手冊，解釋是：要使用這個功能，必須在php.ini文件中加一句指向.ini文件的配置。.ini 文件記錄了所有現(xiàn)有瀏覽器的類型和信息。所以你必須下載最新的文件，下載 .ini 并將它放在服務(wù)器上的某個位置。()使用時，將獲取到的客戶端信息與該文件進行比較，如果可以找到，則返回對應(yīng)的類型。

從以上來看，使用()獲取瀏覽器類型的代價不??！

pHp 還有一種判斷瀏覽器類型的方法，就是使用國外專家寫的開源代碼。有個叫國外的網(wǎng)站，里面有關(guān)于瀏覽器的項目，并且不斷更新寫的類。我看到的最新類可以獲取包括，win，mac，OS，beOS等平臺的瀏覽器信息，功能可以說是非常強大了。下載此文件時，應(yīng)根據(jù)您使用的 pHp 版本進行選擇。該類的具體代碼如下：

getbrowser() == browser::bROWSER_FIREFOX && $browser->getVersion() >= 2 ) {
 *   	echo 'You have FireFox version 2 or greater';
 *   }
 *
 * User Agents Sampled from: http://www.useragentstring.com/
 *
 * This implementation is based on the original work from Gary White
 * http://apptools.com/phptools/browser/
 *
 * UpDATES:
 *
 * 2010-08-20 (v1.9):
 *  + Added MSN Explorer browser (legacy)
 *  + Added bing/MSN Robot (Thanks Rob MacDonald)
 *  + Added the Android platform (pLATFORM_ANDROID)
 *  + Fixed issue with Android 1.6/2.2 (Thanks Tom Hirashima)
 *
 * 2010-04-27 (v1.8):
 *  + Added ipad Support
 *
 * 2010-03-07 (v1.7):
 *  + *MAJOR* Rebuild (preg_match and other "slow" routine removal(s))
 *  + Almost allof Gary's original code has been replaced
 *  + Large pHpUNIT testing environment created to validate new releases and additions
 *  + Added FreebSD platform
 *  + Added OpenbSD platform
 *  + Added NetbSD platform
 *  + Added SunOS platform
 *  + Added OpenSolaris platform
 *  + Added support of the Iceweazel browser
 *  + Added isChromeFrame() call to check if chromeframe is in use
 *  + Moved the Opera check in front of the Firefox check due to legacy Opera User Agents
 *  + Added the __toString() method (Thanks Deano)
 *
 * 2009-11-15:
 *  + Updated the checkes for Firefox
 *  + Added the NOKIA platform
 *  + Added Checks for the NOKIA brower(s)
 *  
 * 2009-11-08:
 *  + pHp 5.3 Support
 *  + Added support for blackberry OS and blackberry browser
 *  + Added support for the Opera Mini browser
 *  + Added additional documenation
 *  + Added support for isRobot() and isMobile()
 *  + Added support for Opera version 10
 *  + Added support for deprecated Netscape Navigator version 9
 *  + Added support for IceCat
 *  + Added support for Shiretoko
 *
 * 2010-04-27 (v1.8):
 *  + Added ipad Support
 *
 * 2009-08-18:
 *  + Updated to support pHp 5.3 - removed all deprecated function calls
 *  + Updated to remove all double quotes (") -- converted to single quotes (')
 *
 * 2009-04-27:
 *  + Updated the IE check to remove a typo and bug (thanks John)
 *
 * 2009-04-22:
 *  + Added detection for Googlebot
 *  + Added detection for the W3C Validator.
 *  + Added detection for Yahoo! Slurp
 *
 * 2009-03-14:
 *  + Added detection for ipods.
 *  + Added platform detection for iphones
 *  + Added platform detection for ipods
 *
 * 2009-02-16: (Rick Hale)
 *  + Added version detection for Android phones.
 *
 * 2008-12-09:
 *  + Removed unused constant
 *
 * 2008-11-07:
 *  + Added Google's Chrome to the detection list
 *  + Added isbrowser(string) to the list of functions special thanks to
 *Daniel 'mavrick' Lang for the function concept (http://mavrick.id.au)
 *
 *
 * Gary White noted: "Since browser detection is so unreliable, I am
 * no longer maintaining this script. You are free to use and or
 * modify/update it as you want, however the author assumes no
 * responsibility for the accuracy of the detected values."
 *
 * Anyone experienced with Gary's script might be interested in these notes:
 *
 *   Added class constants
 *   Added detection and version detection for Google's Chrome
 *   Updated the version detection for Amaya
 *   Updated the version detection for Firefox
 *   Updated the version detection for Lynx
 *   Updated the version detection for WebTV
 *   Updated the version detection for Netpositive
 *   Updated the version detection for IE
 *   Updated the version detection for OmniWeb
 *   Updated the version detection for iCab
 *   Updated the version detection for Safari
 *   Updated Safari to remove mobile devices (iphone)
 *   Added detection for iphone
 *   Added detection for robots
 *   Added detection for mobile devices
 *   Added detection for blackberry
 *   Removed Netscape checks (matches heavily with firefox & mozilla)
 *
 */
class browser {
	private $_agent = '';
	private $_browser_name = '';
	private $_version = '';
	private $_platform = '';
	private $_os = '';
	private $_is_aol = false;
	private $_is_mobile = false;
	private $_is_robot = false;
	private $_aol_version = '';
	const bROWSER_UNKNOWN = 'unknown';
	const VERSION_UNKNOWN = 'unknown';
	const bROWSER_OpERA = 'Opera';// http://www.opera.com/
	const bROWSER_OpERA_MINI = 'Opera Mini';  // http://www.opera.com/mini/
	const bROWSER_WEbTV = 'WebTV';// http://www.webtv.net/pc/
	const bROWSER_IE = 'Internet Explorer';   // http://www.microsoft.com/ie/
	const bROWSER_pOCKET_IE = 'pocket Internet Explorer'; // http://en.wikipedia.org/wiki/Internet_Explorer_Mobile
	const bROWSER_KONQUEROR = 'Konqueror';// http://www.konqueror.org/
	const bROWSER_ICAb = 'iCab';  // http://www.icab.de/
	const bROWSER_OMNIWEb = 'OmniWeb';// http://www.omnigroup.com/applications/omniweb/
	const bROWSER_FIREbIRD = 'Firebird';  // http://www.ibphoenix.com/
	const bROWSER_FIREFOX = 'Firefox';// http://www.mozilla.com/en-US/firefox/firefox.html
	const bROWSER_ICEWEASEL = 'Iceweasel';// http://www.geticeweasel.org/
	const bROWSER_SHIRETOKO = 'Shiretoko';// http://wiki.mozilla.org/projects/shiretoko
	const bROWSER_MOZILLA = 'Mozilla';// http://www.mozilla.com/en-US/
	const bROWSER_AMAYA = 'Amaya';// http://www.w3.org/Amaya/
	const bROWSER_LYNX = 'Lynx';  // http://en.wikipedia.org/wiki/Lynx
	const bROWSER_SAFARI = 'Safari';  // http://apple.com
	const bROWSER_IpHONE = 'iphone';  // http://apple.com
	const bROWSER_IpOD = 'ipod';  // http://apple.com
	const bROWSER_IpAD = 'ipad';  // http://apple.com
	const bROWSER_CHROME = 'Chrome';  // http://www.google.com/chrome
	const bROWSER_ANDROID = 'Android';// http://www.android.com/
	const bROWSER_GOOGLEbOT = 'Googlebot';// http://en.wikipedia.org/wiki/Googlebot
	const bROWSER_SLURp = 'Yahoo! Slurp'; // http://en.wikipedia.org/wiki/Yahoo!_Slurp
	const bROWSER_W3CVALIDATOR = 'W3C Validator'; // http://validator.w3.org/
	const bROWSER_bLACKbERRY = 'blackberry';  // http://www.blackberry.com/
	const bROWSER_ICECAT = 'IceCat';  // http://en.wikipedia.org/wiki/GNU_IceCat
	const bROWSER_NOKIA_S60 = 'Nokia S60 OSS browser';// http://en.wikipedia.org/wiki/Web_browser_for_S60
	const bROWSER_NOKIA = 'Nokia browser';// * all other WAp-based browsers on the Nokia platform
	const bROWSER_MSN = 'MSN browser';// http://explorer.msn.com/
	const bROWSER_MSNbOT = 'MSN bot'; // http://search.msn.com/msnbot.htm
	  // http://en.wikipedia.org/wiki/Msnbot  (used for bing as well)
	
	const bROWSER_NETSCApE_NAVIGATOR = 'Netscape Navigator';  // http://browser.netscape.com/ (DEpRECATED)
	const bROWSER_GALEON = 'Galeon';  // http://galeon.sourceforge.net/ (DEpRECATED)
	const bROWSER_NETpOSITIVE = 'Netpositive';// http://en.wikipedia.org/wiki/Netpositive (DEpRECATED)
	const bROWSER_pHOENIX = 'phoenix';// http://en.wikipedia.org/wiki/History_of_Mozilla_Firefox (DEpRECATED)
	const pLATFORM_UNKNOWN = 'unknown';
	const pLATFORM_WINDOWS = 'Windows';
	const pLATFORM_WINDOWS_CE = 'Windows CE';
	const pLATFORM_AppLE = 'Apple';
	const pLATFORM_LINUX = 'Linux';
	const pLATFORM_OS2 = 'OS/2';
	const pLATFORM_bEOS = 'beOS';
	const pLATFORM_IpHONE = 'iphone';
	const pLATFORM_IpOD = 'ipod';
	const pLATFORM_IpAD = 'ipad';
	const pLATFORM_bLACKbERRY = 'blackberry';
	const pLATFORM_NOKIA = 'Nokia';
	const pLATFORM_FREEbSD = 'FreebSD';
	const pLATFORM_OpENbSD = 'OpenbSD';
	const pLATFORM_NETbSD = 'NetbSD';
	const pLATFORM_SUNOS = 'SunOS';
	const pLATFORM_OpENSOLARIS = 'OpenSolaris';
	const pLATFORM_ANDROID = 'Android';
	
	const OpERATING_SYSTEM_UNKNOWN = 'unknown';
	public function browser($useragent="") {
		$this->reset();
		if( $useragent != "" ) {
			$this->setUserAgent($useragent);
		}
		else {
			$this->determine();
		}
	}
	/**
	* Reset all properties
	*/
	public function reset() {
		$this->_agent = isset($_SERVER['HTTp_USER_AGENT']) ? $_SERVER['HTTp_USER_AGENT'] : "";
		$this->_browser_name = self::bROWSER_UNKNOWN;
		$this->_version = self::VERSION_UNKNOWN;
		$this->_platform = self::pLATFORM_UNKNOWN;
		$this->_os = self::OpERATING_SYSTEM_UNKNOWN;
		$this->_is_aol = false;
		$this->_is_mobile = false;
		$this->_is_robot = false;
		$this->_aol_version = self::VERSION_UNKNOWN;
	}
	/**
	* Check to see if the specific browser is valid
	* @param string $browserName
	* @return True if the browser is the specified browser
	*/
	function isbrowser($browserName) { return( 0 == strcasecmp($this->_browser_name, trim($browserName))); }
	/**
	* The name of the browser.  All return types are from the class contants
	* @return string Name of the browser
	*/
	public function getbrowser() { return $this->_browser_name; }
	/**
	* Set the name of the browser
	* @param $browser The name of the browser
	*/
	public function setbrowser($browser) { return $this->_browser_name = $browser; }
	/**
	* The name of the platform.  All return types are from the class contants
	* @return string Name of the browser
	*/
	public function getplatform() { return $this->_platform; }
	/**
	* Set the name of the platform
	* @param $platform The name of the platform
	*/
	public function setplatform($platform) { return $this->_platform = $platform; }
	/**
	* The version of the browser.
	* @return string Version of the browser (will only contain alpha-numeric characters and a period)
	*/
	public function getVersion() { return $this->_version; }
	/**
	* Set the version of the browser
	* @param $version The version of the browser
	*/
	public function setVersion($version) { $this->_version = preg_replace('/[^0-9,.,a-z,A-Z-]/','',$version); }
	/**
	* The version of AOL.
	* @return string Version of AOL (will only contain alpha-numeric characters and a period)
	*/
	public function getAolVersion() { return $this->_aol_version; }
	/**
	* Set the version of AOL
	* @param $version The version of AOL
	*/
	public function setAolVersion($version) { $this->_aol_version = preg_replace('/[^0-9,.,a-z,A-Z]/','',$version); }
	/**
	* Is the browser from AOL?
	* @return boolean True if the browser is from AOL otherwise false
	*/
	public function isAol() { return $this->_is_aol; }
	/**
	* Is the browser from a mobile device?
	* @return boolean True if the browser is from a mobile device otherwise false
	*/
	public function isMobile() { return $this->_is_mobile; }
	/**
	* Is the browser from a robot (ex Slurp,Googlebot)?
	* @return boolean True if the browser is from a robot otherwise false
	*/
	public function isRobot() { return $this->_is_robot; }
	/**
	* Set the browser to be from AOL
	* @param $isAol
	*/
	public function setAol($isAol) { $this->_is_aol = $isAol; }
	/**
	 * Set the browser to be mobile
	 * @param boolean $value is the browser a mobile brower or not
	 */
	protected function setMobile($value=true) { $this->_is_mobile = $value; }
	/**
	 * Set the browser to be a robot
	 * @param boolean $value is the browser a robot or not
	 */
	protected function setRobot($value=true) { $this->_is_robot = $value; }
	/**
	* Get the user agent value in use to determine the browser
	* @return string The user agent from the HTTp header
	*/
	public function getUserAgent() { return $this->_agent; }
	/**
	* Set the user agent value (the construction will use the HTTp header value - this will overwrite it)
	* @param $agent_string The value for the User Agent
	*/
	public function setUserAgent($agent_string) {
		$this->reset();
		$this->_agent = $agent_string;
		$this->determine();
	}
	/**
	 * Used to determine if the browser is actually "chromeframe"
	 * @since 1.7
	 * @return boolean True if the browser is using chromeframe
	 */
	public function isChromeFrame() {
		return( strpos($this->_agent,"chromeframe") !== false );
	}
	/**
	* Returns a formatted string with a summary of the details of the browser.
	* @return string formatted string with a summary of the browser
	*/
	public function __toString() {
		return "browser Name:{$this->getbrowser()}
\n" .
		   "browser Version:{$this->getVersion()}
\n" .
		   "browser User Agent String:{$this->getUserAgent()}
\n" .
		   "platform:{$this->getplatform()}
";
	}
	/**
	 * protected routine to calculate and determine what the browser is in use (including platform)
	 */
	protected function determine() {
		$this->checkplatform();
		$this->checkbrowsers();
		$this->checkForAol();
	}
	/**
	 * protected routine to determine the browser type
	 * @return boolean True if the browser was detected otherwise false
	 */
	 protected function checkbrowsers() {
		return (
			// well-known, well-used
			// Special Notes:
			// (1) Opera must be checked before FireFox due to the odd
			// user agents used in some older versions of Opera
			// (2) WebTV is strapped onto Internet Explorer so we must
			// check for WebTV before IE
			// (3) (deprecated) Galeon is based on Firefox and needs to be
			// tested before Firefox is tested
			// (4) OmniWeb is based on Safari so OmniWeb check must occur
			// before Safari
			// (5) Netscape 9+ is based on Firefox so Netscape checks
			// before FireFox are necessary
			$this->checkbrowserWebTv() ||
			$this->checkbrowserInternetExplorer() ||
			$this->checkbrowserOpera() ||
			$this->checkbrowserGaleon() ||
			$this->checkbrowserNetscapeNavigator9plus() ||
			$this->checkbrowserFirefox() ||
			$this->checkbrowserChrome() ||
			$this->checkbrowserOmniWeb() ||
			// common mobile
			$this->checkbrowserAndroid() ||
			$this->checkbrowseripad() ||
			$this->checkbrowseripod() ||
			$this->checkbrowseriphone() ||
			$this->checkbrowserblackberry() ||
			$this->checkbrowserNokia() ||
			// common bots
			$this->checkbrowserGooglebot() ||
			$this->checkbrowserMSNbot() ||
			$this->checkbrowserSlurp() ||
			// WebKit base check (post mobile and others)
			$this->checkbrowserSafari() ||
			
			// everyone else
			$this->checkbrowserNetpositive() ||
			$this->checkbrowserFirebird() ||
			$this->checkbrowserKonqueror() ||
			$this->checkbrowserIcab() ||
			$this->checkbrowserphoenix() ||
			$this->checkbrowserAmaya() ||
			$this->checkbrowserLynx() ||
			$this->checkbrowserShiretoko() ||
			$this->checkbrowserIceCat() ||
			$this->checkbrowserW3CValidator() ||
			$this->checkbrowserMozilla() /* Mozilla is such an open standard that you must check it last */
		);
	}
	/**
	 * Determine if the user is using a blackberry (last updated 1.7)
	 * @return boolean True if the browser is the blackberry browser otherwise false
	 */
	protected function checkbrowserblackberry() {
		if( stripos($this->_agent,'blackberry') !== false ) {
			$aresult = explode("/",stristr($this->_agent,"blackberry"));
			$aversion = explode(' ',$aresult[1]);
			$this->setVersion($aversion[0]);
			$this->_browser_name = self::bROWSER_bLACKbERRY;
			$this->setMobile(true);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the user is using an AOL User Agent (last updated 1.7)
	 * @return boolean True if the browser is from AOL otherwise false
	 */
	protected function checkForAol() {
			$this->setAol(false);
			$this->setAolVersion(self::VERSION_UNKNOWN);
			if( stripos($this->_agent,'aol') !== false ) {
			$aversion = explode(' ',stristr($this->_agent, 'AOL'));
			$this->setAol(true);
			$this->setAolVersion(preg_replace('/[^0-9\.a-z]/i', '', $aversion[1]));
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is the Googlebot or not (last updated 1.7)
	 * @return boolean True if the browser is the Googletbot otherwise false
	 */
	protected function checkbrowserGooglebot() {
		if( stripos($this->_agent,'googlebot') !== false ) {
				$aresult = explode('/',stristr($this->_agent,'googlebot'));
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion(str_replace(';','',$aversion[0]));
				$this->_browser_name = self::bROWSER_GOOGLEbOT;
				$this->setRobot(true);
				return true;
		}
		return false;
	}
		/**
	 * Determine if the browser is the MSNbot or not (last updated 1.9)
	 * @return boolean True if the browser is the MSNbot otherwise false
	 */
		protected function checkbrowserMSNbot() {
			if( stripos($this->_agent,"msnbot") !== false ) {
				$aresult = explode("/",stristr($this->_agent,"msnbot"));
				$aversion = explode(" ",$aresult[1]);
				$this->setVersion(str_replace(";","",$aversion[0]));
				$this->_browser_name = self::bROWSER_MSNbOT;
				$this->setRobot(true);
				return true;
			}
			return false;
		}	
	
	/**
	 * Determine if the browser is the W3C Validator or not (last updated 1.7)
	 * @return boolean True if the browser is the W3C Validator otherwise false
	 */
	protected function checkbrowserW3CValidator() {
		if( stripos($this->_agent,'W3C-checklink') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'W3C-checklink'));
			$aversion = explode(' ',$aresult[1]);
			$this->setVersion($aversion[0]);
			$this->_browser_name = self::bROWSER_W3CVALIDATOR;
			return true;
		}
		else if( stripos($this->_agent,'W3C_Validator') !== false ) {
				// Some of the Validator versions do not delineate w/ a slash - add it back in
				$ua = str_replace("W3C_Validator ", "W3C_Validator/", $this->_agent);
			$aresult = explode('/',stristr($ua,'W3C_Validator'));
			$aversion = explode(' ',$aresult[1]);
			$this->setVersion($aversion[0]);
			$this->_browser_name = self::bROWSER_W3CVALIDATOR;
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is the Yahoo! Slurp Robot or not (last updated 1.7)
	 * @return boolean True if the browser is the Yahoo! Slurp Robot otherwise false
	 */
	protected function checkbrowserSlurp() {
		if( stripos($this->_agent,'slurp') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'Slurp'));
			$aversion = explode(' ',$aresult[1]);
			$this->setVersion($aversion[0]);
			$this->_browser_name = self::bROWSER_SLURp;
				$this->setRobot(true);
				$this->setMobile(false);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Internet Explorer or not (last updated 1.7)
	 * @return boolean True if the browser is Internet Explorer otherwise false
	 */
	protected function checkbrowserInternetExplorer() {
		// Test for v1 - v1.5 IE
		if( stripos($this->_agent,'microsoft internet explorer') !== false ) {
			$this->setbrowser(self::bROWSER_IE);
			$this->setVersion('1.0');
			$aresult = stristr($this->_agent, '/');
			if( preg_match('/308|425|426|474|0b1/i', $aresult) ) {
				$this->setVersion('1.5');
			}
				return true;
		}
		// Test for versions > 1.5
		else if( stripos($this->_agent,'msie') !== false && stripos($this->_agent,'opera') === false ) {
			// See if the browser is the odd MSN Explorer
			if( stripos($this->_agent,'msnb') !== false ) {
				$aresult = explode(' ',stristr(str_replace(';','; ',$this->_agent),'MSN'));
				$this->setbrowser( self::bROWSER_MSN );
				$this->setVersion(str_replace(array('(',')',';'),'',$aresult[1]));
				return true;
			}
			$aresult = explode(' ',stristr(str_replace(';','; ',$this->_agent),'msie'));
			$this->setbrowser( self::bROWSER_IE );
			$this->setVersion(str_replace(array('(',')',';'),'',$aresult[1]));
			return true;
		}
		// Test for pocket IE
		else if( stripos($this->_agent,'mspie') !== false || stripos($this->_agent,'pocket') !== false ) {
			$aresult = explode(' ',stristr($this->_agent,'mspie'));
			$this->setplatform( self::pLATFORM_WINDOWS_CE );
			$this->setbrowser( self::bROWSER_pOCKET_IE );
			$this->setMobile(true);
			if( stripos($this->_agent,'mspie') !== false ) {
				$this->setVersion($aresult[1]);
			}
			else {
				$aversion = explode('/',$this->_agent);
				$this->setVersion($aversion[1]);
			}
			return true;
		}
			return false;
	}
	/**
	 * Determine if the browser is Opera or not (last updated 1.7)
	 * @return boolean True if the browser is Opera otherwise false
	 */
	protected function checkbrowserOpera() {
		if( stripos($this->_agent,'opera mini') !== false ) {
			$resultant = stristr($this->_agent, 'opera mini');
			if( preg_match('/\//',$resultant) ) {
				$aresult = explode('/',$resultant);
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion($aversion[0]);
				}
			else {
				$aversion = explode(' ',stristr($resultant,'opera mini'));
				$this->setVersion($aversion[1]);
			}
			$this->_browser_name = self::bROWSER_OpERA_MINI;
				$this->setMobile(true);
				return true;
		}
		else if( stripos($this->_agent,'opera') !== false ) {
			$resultant = stristr($this->_agent, 'opera');
			if( preg_match('/Version\/(10.*)$/',$resultant,$matches) ) {
				$this->setVersion($matches[1]);
			}
			else if( preg_match('/\//',$resultant) ) {
				$aresult = explode('/',str_replace("("," ",$resultant));
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion($aversion[0]);
			}
			else {
				$aversion = explode(' ',stristr($resultant,'opera'));
				$this->setVersion(isset($aversion[1])?$aversion[1]:"");
			}
			$this->_browser_name = self::bROWSER_OpERA;
			return true;
		}
			return false;
	}
	/**
	 * Determine if the browser is Chrome or not (last updated 1.7)
	 * @return boolean True if the browser is Chrome otherwise false
	 */
	protected function checkbrowserChrome() {
		if( stripos($this->_agent,'Chrome') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'Chrome'));
			$aversion = explode(' ',$aresult[1]);
			$this->setVersion($aversion[0]);
			$this->setbrowser(self::bROWSER_CHROME);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is WebTv or not (last updated 1.7)
	 * @return boolean True if the browser is WebTv otherwise false
	 */
	protected function checkbrowserWebTv() {
		if( stripos($this->_agent,'webtv') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'webtv'));
			$aversion = explode(' ',$aresult[1]);
			$this->setVersion($aversion[0]);
			$this->setbrowser(self::bROWSER_WEbTV);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Netpositive or not (last updated 1.7)
	 * @return boolean True if the browser is Netpositive otherwise false
	 */
	protected function checkbrowserNetpositive() {
		if( stripos($this->_agent,'Netpositive') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'Netpositive'));
			$aversion = explode(' ',$aresult[1]);
			$this->setVersion(str_replace(array('(',')',';'),'',$aversion[0]));
			$this->setbrowser(self::bROWSER_NETpOSITIVE);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Galeon or not (last updated 1.7)
	 * @return boolean True if the browser is Galeon otherwise false
	 */
	protected function checkbrowserGaleon() {
		if( stripos($this->_agent,'galeon') !== false ) {
			$aresult = explode(' ',stristr($this->_agent,'galeon'));
			$aversion = explode('/',$aresult[0]);
			$this->setVersion($aversion[1]);
			$this->setbrowser(self::bROWSER_GALEON);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Konqueror or not (last updated 1.7)
	 * @return boolean True if the browser is Konqueror otherwise false
	 */
	protected function checkbrowserKonqueror() {
		if( stripos($this->_agent,'Konqueror') !== false ) {
			$aresult = explode(' ',stristr($this->_agent,'Konqueror'));
			$aversion = explode('/',$aresult[0]);
			$this->setVersion($aversion[1]);
			$this->setbrowser(self::bROWSER_KONQUEROR);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is iCab or not (last updated 1.7)
	 * @return boolean True if the browser is iCab otherwise false
	 */
	protected function checkbrowserIcab() {
		if( stripos($this->_agent,'icab') !== false ) {
			$aversion = explode(' ',stristr(str_replace('/',' ',$this->_agent),'icab'));
			$this->setVersion($aversion[1]);
			$this->setbrowser(self::bROWSER_ICAb);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is OmniWeb or not (last updated 1.7)
	 * @return boolean True if the browser is OmniWeb otherwise false
	 */
	protected function checkbrowserOmniWeb() {
		if( stripos($this->_agent,'omniweb') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'omniweb'));
			$aversion = explode(' ',isset($aresult[1])?$aresult[1]:"");
			$this->setVersion($aversion[0]);
			$this->setbrowser(self::bROWSER_OMNIWEb);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is phoenix or not (last updated 1.7)
	 * @return boolean True if the browser is phoenix otherwise false
	 */
	protected function checkbrowserphoenix() {
		if( stripos($this->_agent,'phoenix') !== false ) {
			$aversion = explode('/',stristr($this->_agent,'phoenix'));
			$this->setVersion($aversion[1]);
			$this->setbrowser(self::bROWSER_pHOENIX);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Firebird or not (last updated 1.7)
	 * @return boolean True if the browser is Firebird otherwise false
	 */
	protected function checkbrowserFirebird() {
		if( stripos($this->_agent,'Firebird') !== false ) {
			$aversion = explode('/',stristr($this->_agent,'Firebird'));
			$this->setVersion($aversion[1]);
			$this->setbrowser(self::bROWSER_FIREbIRD);
				return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Netscape Navigator 9+ or not (last updated 1.7)
		 * NOTE: (http://browser.netscape.com/ - Official support ended on March 1st, 2008)
	 * @return boolean True if the browser is Netscape Navigator 9+ otherwise false
	 */
	protected function checkbrowserNetscapeNavigator9plus() {
		if( stripos($this->_agent,'Firefox') !== false && preg_match('/Navigator\/([^ ]*)/i',$this->_agent,$matches) ) {
			$this->setVersion($matches[1]);
			$this->setbrowser(self::bROWSER_NETSCApE_NAVIGATOR);
			return true;
		}
		else if( stripos($this->_agent,'Firefox') === false && preg_match('/Netscape6?\/([^ ]*)/i',$this->_agent,$matches) ) {
			$this->setVersion($matches[1]);
			$this->setbrowser(self::bROWSER_NETSCApE_NAVIGATOR);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Shiretoko or not (https://wiki.mozilla.org/projects/shiretoko) (last updated 1.7)
	 * @return boolean True if the browser is Shiretoko otherwise false
	 */
	protected function checkbrowserShiretoko() {
		if( stripos($this->_agent,'Mozilla') !== false && preg_match('/Shiretoko\/([^ ]*)/i',$this->_agent,$matches) ) {
			$this->setVersion($matches[1]);
			$this->setbrowser(self::bROWSER_SHIRETOKO);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Ice Cat or not (http://en.wikipedia.org/wiki/GNU_IceCat) (last updated 1.7)
	 * @return boolean True if the browser is Ice Cat otherwise false
	 */
	protected function checkbrowserIceCat() {
		if( stripos($this->_agent,'Mozilla') !== false && preg_match('/IceCat\/([^ ]*)/i',$this->_agent,$matches) ) {
			$this->setVersion($matches[1]);
			$this->setbrowser(self::bROWSER_ICECAT);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Nokia or not (last updated 1.7)
	 * @return boolean True if the browser is Nokia otherwise false
	 */
	protected function checkbrowserNokia() {
		if( preg_match("/Nokia([^\/]+)\/([^ Sp]+)/i",$this->_agent,$matches) ) {
			$this->setVersion($matches[2]);
				if( stripos($this->_agent,'Series60') !== false || strpos($this->_agent,'S60') !== false ) {
					$this->setbrowser(self::bROWSER_NOKIA_S60);
				}
				else {
					$this->setbrowser( self::bROWSER_NOKIA );
				}
			$this->setMobile(true);
			return true;
		}
			return false;
	}
	/**
	 * Determine if the browser is Firefox or not (last updated 1.7)
	 * @return boolean True if the browser is Firefox otherwise false
	 */
	protected function checkbrowserFirefox() {
		if( stripos($this->_agent,'safari') === false ) {
				if( preg_match("/Firefox[\/ \(]([^ ;\)]+)/i",$this->_agent,$matches) ) {
					$this->setVersion($matches[1]);
					$this->setbrowser(self::bROWSER_FIREFOX);
					return true;
				}
				else if( preg_match("/Firefox$/i",$this->_agent,$matches) ) {
					$this->setVersion("");
					$this->setbrowser(self::bROWSER_FIREFOX);
					return true;
				}
			}
		return false;
	}
		/**
	 * Determine if the browser is Firefox or not (last updated 1.7)
	 * @return boolean True if the browser is Firefox otherwise false
	 */
	protected function checkbrowserIceweasel() {
			if( stripos($this->_agent,'Iceweasel') !== false ) {
				$aresult = explode('/',stristr($this->_agent,'Iceweasel'));
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion($aversion[0]);
				$this->setbrowser(self::bROWSER_ICEWEASEL);
				return true;
			}
			return false;
		}
	/**
	 * Determine if the browser is Mozilla or not (last updated 1.7)
	 * @return boolean True if the browser is Mozilla otherwise false
	 */
	protected function checkbrowserMozilla() {
		if( stripos($this->_agent,'mozilla') !== false  && preg_match('/rv:[0-9].[0-9][a-b]?/i',$this->_agent) && stripos($this->_agent,'netscape') === false) {
			$aversion = explode(' ',stristr($this->_agent,'rv:'));
			preg_match('/rv:[0-9].[0-9][a-b]?/i',$this->_agent,$aversion);
			$this->setVersion(str_replace('rv:','',$aversion[0]));
			$this->setbrowser(self::bROWSER_MOZILLA);
			return true;
		}
		else if( stripos($this->_agent,'mozilla') !== false && preg_match('/rv:[0-9]\.[0-9]/i',$this->_agent) && stripos($this->_agent,'netscape') === false ) {
			$aversion = explode('',stristr($this->_agent,'rv:'));
			$this->setVersion(str_replace('rv:','',$aversion[0]));
			$this->setbrowser(self::bROWSER_MOZILLA);
			return true;
		}
		else if( stripos($this->_agent,'mozilla') !== false  && preg_match('/mozilla\/([^ ]*)/i',$this->_agent,$matches) && stripos($this->_agent,'netscape') === false ) {
			$this->setVersion($matches[1]);
			$this->setbrowser(self::bROWSER_MOZILLA);
			return true;
		}
			return false;
	}
	/**
	 * Determine if the browser is Lynx or not (last updated 1.7)
	 * @return boolean True if the browser is Lynx otherwise false
	 */
	protected function checkbrowserLynx() 
	{
		if( stripos($this->_agent,'lynx') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'Lynx'));
			$aversion = explode(' ',(isset($aresult[1])?$aresult[1]:""));
			$this->setVersion($aversion[0]);
			$this->setbrowser(self::bROWSER_LYNX);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Amaya or not (last updated 1.7)
	 * @return boolean True if the browser is Amaya otherwise false
	 */
	protected function checkbrowserAmaya() 
	{
		if( stripos($this->_agent,'amaya') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'Amaya'));
			$aversion = explode(' ',$aresult[1]);
			$this->setVersion($aversion[0]);
			$this->setbrowser(self::bROWSER_AMAYA);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Safari or not (last updated 1.7)
	 * @return boolean True if the browser is Safari otherwise false
	 */
	protected function checkbrowserSafari() 
	{
		if( stripos($this->_agent,'Safari') !== false && stripos($this->_agent,'iphone') === false && stripos($this->_agent,'ipod') === false ) {
			$aresult = explode('/',stristr($this->_agent,'Version'));
			if( isset($aresult[1]) ) {
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion($aversion[0]);
			}
			else $this->setVersion(self::VERSION_UNKNOWN);
			$this->setbrowser(self::bROWSER_SAFARI);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is iphone or not (last updated 1.7)
	 * @return boolean True if the browser is iphone otherwise false
	 */
	protected function checkbrowseriphone() 
	{
		if( stripos($this->_agent,'iphone') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'Version'));
			if( isset($aresult[1]) ) {
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion($aversion[0]);
			}
			else $this->setVersion(self::VERSION_UNKNOWN);
			$this->setMobile(true);
			$this->setbrowser(self::bROWSER_IpHONE);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is ipod or not (last updated 1.7)
	 * @return boolean True if the browser is ipod otherwise false
	 */
	protected function checkbrowseripad() 
	{
		if( stripos($this->_agent,'ipad') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'Version'));
			if( isset($aresult[1]) ) {
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion($aversion[0]);
			}
			else $this->setVersion(self::VERSION_UNKNOWN);
			$this->setMobile(true);
			$this->setbrowser(self::bROWSER_IpAD);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is ipod or not (last updated 1.7)
	 * @return boolean True if the browser is ipod otherwise false
	 */
	protected function checkbrowseripod() 
	{
		if( stripos($this->_agent,'ipod') !== false ) {
			$aresult = explode('/',stristr($this->_agent,'Version'));
			if( isset($aresult[1]) ) {
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion($aversion[0]);
			}
			else $this->setVersion(self::VERSION_UNKNOWN);
			$this->setMobile(true);
			$this->setbrowser(self::bROWSER_IpOD);
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is Android or not (last updated 1.7)
	 * @return boolean True if the browser is Android otherwise false
	 */
	protected function checkbrowserAndroid() 
	{
		if( stripos($this->_agent,'Android') !== false ) {
			$aresult = explode(' ',stristr($this->_agent,'Android'));
			if( isset($aresult[1]) ) {
				$aversion = explode(' ',$aresult[1]);
				$this->setVersion($aversion[0]);
			}
			else $this->setVersion(self::VERSION_UNKNOWN);
			$this->setMobile(true);
			$this->setbrowser(self::bROWSER_ANDROID);
			return true;
		}
		return false;
	}
	/**
	 * Determine the user's platform (last updated 1.7)
	 */
	protected function checkplatform() 
	{
		if( stripos($this->_agent, 'windows') !== false ) $this->_platform = self::pLATFORM_WINDOWS;
		else if( stripos($this->_agent, 'ipad') !== false ) $this->_platform = self::pLATFORM_IpAD;
		else if( stripos($this->_agent, 'ipod') !== false ) $this->_platform = self::pLATFORM_IpOD;
		else if( stripos($this->_agent, 'iphone') !== false ) $this->_platform = self::pLATFORM_IpHONE;
		elseif( stripos($this->_agent, 'mac') !== false ) $this->_platform = self::pLATFORM_AppLE;
		elseif( stripos($this->_agent, 'android') !== false ) $this->_platform = self::pLATFORM_ANDROID;
		elseif( stripos($this->_agent, 'linux') !== false ) $this->_platform = self::pLATFORM_LINUX;
		else if( stripos($this->_agent, 'Nokia') !== false ) $this->_platform = self::pLATFORM_NOKIA;
		else if( stripos($this->_agent, 'blackberry') !== false ) $this->_platform = self::pLATFORM_bLACKbERRY;
		elseif( stripos($this->_agent,'FreebSD') !== false ) $this->_platform = self::pLATFORM_FREEbSD;
		elseif( stripos($this->_agent,'OpenbSD') !== false ) $this->_platform = self::pLATFORM_OpENbSD;
		elseif( stripos($this->_agent,'NetbSD') !== false ) $this->_platform = self::pLATFORM_NETbSD;
		elseif( stripos($this->_agent, 'OpenSolaris') !== false ) $this->_platform = self::pLATFORM_OpENSOLARIS;
		elseif( stripos($this->_agent, 'SunOS') !== false ) $this->_platform = self::pLATFORM_SUNOS;
		elseif( stripos($this->_agent, 'OS\/2') !== false ) $this->_platform = self::pLATFORM_OS2;
		elseif( stripos($this->_agent, 'beOS') !== false ) $this->_platform = self::pLATFORM_bEOS;
		elseif( stripos($this->_agent, 'win') !== false ) $this->_platform = self::pLATFORM_WINDOWS;
	}
}

這個類的用法也很簡單，如下：

$obj_browser = new browser; //創(chuàng)建一個此類的一個實例
$obj_browser->getbrowser(); //調(diào)用相關(guān)函數(shù)，獲取瀏覽器名稱
$obj_browser->getplatform(); //調(diào)用相關(guān)函數(shù)，獲取系統(tǒng)名稱
$obj_browser->isMobile(); //判斷來訪者所用設(shè)備是iphone、ipad或者電腦（pC） 

好了，到此為止php獲取服務(wù)器ie版本，通過php判斷瀏覽器類型的方法就總結(jié)了。有三種方法，但是如果準(zhǔn)確率不是那么高，第一種完全可以，第二種和第三種方法有點過于精細， 無法確定復(fù)雜性但很明顯。

另外，如果想知道如何判斷瀏覽器類型，可以參考本站文章：

如何獲取瀏覽器類型和版本號

網(wǎng)站欄目：一下使用php判斷瀏覽器類型的方法發(fā)現(xiàn)解決這個問題很簡單
轉(zhuǎn)載源于：http://www.muchs.cn/news28/296528.html

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