php正则抓取整个域名下的图片

代码出处：jUnion

适用平台：Windows， Linux(Ubuntu)，php-5.2.5+，Apache

功能：抓取整个站点的图片，暂无借助php的curl插件开发， 后期完善

配置：config目录下
domain_name：域名（默认：bizhibar.com）
request_site：网站网址（默认：http://www.bizhibar.com/）
request_url：从网站的哪个页面开始（默认：http://www.bizhibar.com/）
accept_type: 图片类型（默认：gif, bmp, png, ico, jpg, jpeg）
save_path：图片保存路径（默认：savefiles/）
partition_name：图片保存目录名称前缀（默认：img_）
dir_file_limit: 每个目录容许多少个文件（默认：100）
serialize_img_size: 当读取了多少个图片地址才缓存到cache目录下的accompImg文件当中，下次继续抓取的时候会忽略这些地址。（默认：30）
serialize_url_size：与serialize_url_size一样，已读取多少个链接地址才缓存到cache目录
下的overURL，下次继续抓取的时候忽略这些地址。（默认：10）

说明：欢迎诸君批评指教，有任何新问题或者需要改进的地方，请您反馈给我

set_time_limit(0);
require dirname(__FILE__).DIRECTORY_SEPARATOR.'include'.DIRECTORY_SEPARATOR.'Capture.const.php';
require __Home__.'include'.__Os__.'Capture.class.php';

$_cfg = array(
	'site' => __Home__.'config'.__Os__.'capture.site.php',
	'preg' => __Home__.'config'.__Os__.'capture.preg.php',
	'accompImg' => __Home__.'cache'.__Os__.'accompImg',
	'overURL'   => __Home__.'cache'.__Os__.'overURL'
);

$_parse = new Capture( $_cfg );
$_parse->parseQuestUrl();

?>

/**
 * The main class
 * @author pankai
 * @date 2013-08-10
 */
class Capture {
	private static $_Config = array();

	private static $_CapSite = NULL;
	private static $_CapPreg = NULL;

	private static $_overURL = array();

	private $_mark = FALSE;
	private static $_markTime = 1;
	/**
	 * initialize the main class: Capture
	 * @param $_cfg array
	 */
	public function __construct( &$_cfg ) {
		self::$_Config = &$_cfg;

		self::$_CapSite = require $_cfg['site'];
		self::$_CapPreg = require $_cfg['preg'];

		foreach( self::$_CapPreg as $_key => $_value ) {
			self::$_CapPreg[$_key] = str_replace( '_request_site', self::$_CapSite['request_site'], $_value );
		}

		self::import( 'file.OperateFile' );
		if( file_exists( $_cfg['overURL'] ) && filesize( $_cfg['overURL'] ) > 0 ) {
			$_contents = OperateFile::readText( $_cfg['overURL'], filesize( $_cfg['overURL'] ) );
			self::$_overURL = unserialize( $_contents );
		}

		self::import('pivotal.Pivotal');
		if( file_exists( $_cfg['accompImg'] ) && filesize( $_cfg['accompImg'] ) > 0 ) {
			$_contents = OperateFile::readText( $_cfg['accompImg'], filesize( $_cfg['accompImg'] ) );
			Pivotal::$_accompImg = unserialize( $_contents );
		}

	}
	/**
	 * load class, follow Java pragrammer(package): import com.jUnion.Capture
	 * @param $_class
	 */
	public static function import( $_class ) {
		require_once __Home__.'include'.__Os__.str_replace( '.', __Os__, $_class ).'.class.php';
	}

	/**
	 * create an instance of Pivotal class
	 * @param $_source
	 */
	private function getCapInstance( &$_source ) {
		$this->_mark = FALSE;

		$_Captal = new Pivotal( self::$_Config, $_source );
		$_tagA = $_Captal->parseUrl();

		$this->_mark = TRUE;

		return $_tagA;
	}

	/**
	 * go forward one by one
	 * @param $_tagArr
	 */
	private function roundTagA( &$_tagArr ) {
		if( $_tagArr == NULL ) {
			return;
		}
		$_tagArrLength = count( $_tagArr );
		for( $i = 0; $i 			if( is_array( $_tagArr[ $i ] ) ) {
				$this->roundTagA( $_tagArr[ $i ] );
			}
			else {
				if( stripos( $_tagArr[$i], self::$_CapSite['domain_name'] )
					=== FALSE ) {
						continue;
					}
				if( in_array( $_tagArr[$i], self::$_overURL ) ) {
					continue;
				}
				self::$_overURL[] = $_tagArr[$i];
				if( count( self::$_overURL ) % self::$_CapSite['serialize_url_size'] == 0 ) {
					OperateFile::setText( self::$_Config['overURL'], serialize( self::$_overURL ) );
				}
				do {
					$_tagA = $this->getCapInstance( Http::get( $_tagArr[$i] ) );
					sleep( self::$_CapSite['preform_page_time'] * self::$_markTime );
					if( $this->_mark === TRUE ) {
						self::$_markTime = self::$_CapSite['preform_page_time'];
						break;
					}
					self::$_markTime *= 2;
				} while( true );
				/* parse the main page and return next page */
				$this->roundTagA( $_tagA );
			}
		}
	}

	public function parseQuestUrl() {
		self::import('http.Http');
		$_round_Arr = $this->getCapInstance( Http::get( self::$_CapSite['request_url'] ) );
		$this->roundTagA( $_round_Arr );
	}
}
?>