对各种编码及压缩的页面内容抓取程序PHP

/** * 抓取页面内容 *  * $obj = new spider() * $result = $obj->spider('http://www.test.com/1.html'); *  * @author lock */class Spider {		/**	 *	抓取页面内容	 *	 * @param string $url	 * @return string	 */	public function spider($url) {		set_time_limit(10);				$result = self::fileGetContents($url);		if (empty($result)) {			$result = self::snoopy($url);		}		if (empty($result)) {			return false;		}				$result = self::array_iconv($result);		if (empty($result)) {			return false;		}				$result = str_replace("\n", "", $result);			return $result;	}		/**	 * 获取页面内容	 * 	 * @param string $url	 * @return string	 */	public function fileGetContents($url) {		//只读2字节  如果为(16进制)1f 8b (10进制)31 139则开启了gzip ;		$file = @fopen($url, 'rb');		$bin = @fread($file, 2);		@fclose($file);		$strInfo = @unpack('C2chars', $bin);		$typeCode = intval($strInfo['chars1'].$strInfo['chars2']);		$url = ($typeCode==31139) ? 'compress.zlib://'.$url:$url; // 三元表达式			return @file_get_contents($url);	}		/**	 * 获取页面内容	 * 	 * @param string $url	 * @return string	 */	public function snoopy($url){		require_once 'Snoopy.class.php';		$snoopy = new Snoopy;		$snoopy->agent = 'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36';		$snoopy->_fp_timeout = 10;		$urlSplit = self::urlSimplify($url);		$snoopy->referer = $urlSplit['domain'];		$result = $snoopy->fetch($url);		return  $snoopy->results; 	}		/**	 *对数据进行编码转换(来自网络)	 *	 * @param array/string $data       数组	 * @param string $output    转换后的编码	 * @return 返回编码后的数据	 */	public function array_iconv($data,  $output = 'utf-8') {		$encodeArr = array('UTF-8', 'ASCII', 'GBK', 'GB2312', 'BIG5', 'JIS', 'eucjp-win', 'sjis-win', 'EUC-JP');		$encoded = mb_detect_encoding($data, $encodeArr);			if (empty($encoded)) { $encoded='UTF-8'; }			if (!is_array($data)) {			return @mb_convert_encoding($data, $output, $encoded);		} else {			foreach ($data as $key=>$val) {				$key = self::array_iconv($key, $output);				if (is_array($val)) {					$data[$key] = self::array_iconv($val, $output);				} else {					$data[$key] = @mb_convert_encoding($data, $output, $encoded);				}			}			return $data;		}	}	}