php capture pictures

function actionGetimg(){
		ob_end_clean();
		ob_implicit_flush(1);
		//13050
		for($a=1;$a<13074;$a++){
			echo $a.&#39;+&#39;;
			echo &#39;<br/>&#39;;
			$url = "http://www.jtyxzz.com/portal.php?mod=view&aid=".$a;
			$arr = $this->file_from_url_content($url);
			$regex4 = "/<img src=\"data\/[\s\S]*?\">/";//标题
			preg_match_all($regex4, $arr, $result1);
			//var_dump($result1);
			//var_dump(empty($result1[0]));exit;
			if (!empty($result1[0])) {
				foreach ($result1 as $key => $val) {
					$first = str_replace(&#39;<img src="&#39;, &#39;&#39;, $val);
					$second = str_replace(&#39;">&#39;, &#39;&#39;, $first);
				}
				//dump($second);exit;
				foreach ($second as $key => $val) {
					//var_dump($val);
					//echo &#39;<br/>&#39;;
					$zuihou=strrpos($val,&#39;/&#39;);
					$mulu=substr($val,0,$zuihou);
					//$ming=substr($val,$zuihou+1);
					//dump($ming);exit;
					if(is_dir($mulu)){
						//echo &#39;cunzai&#39;;
					}else{//目录不存在创建目录
						//echo &#39;bucunzai&#39;;exit;
						mkdir($mulu,0777,true);
					}


					$image =@file_get_contents(&#39;http://www.jtyxzz.com/&#39; . $val);
					if($image){
						file_put_contents($val, $image);
						//echo $val;exit;
					}else{
						file_put_contents(&#39;images/diushi.txt&#39;,$a.&#39;/&#39;.$val.&#39;图片丢失<br/>&#39;,FILE_APPEND);
                        echo $a.&#39;/&#39;.$val.&#39;图片丢失&#39;;
						echo &#39;<br/>&#39;;
					}


				}
			}else {
                echo $a.&#39;no img or no permission&#39;;
				echo &#39;<br/>&#39;;
			}
			$sleep=$a/100;
			if(is_int($sleep)){
				echo $sleep;
				echo &#39;<br/>&#39;;
				echo $a;
				sleep(rand(40,50));
			}
		}
		echo &#39;图片采集完毕&#39;;
		//var_dump($second);exit;
       exit;
	}

/**
	 * 异步将远程链接上的内容
	 * @param unknown $url 远程地址
	 * @param unknown $saveName 保存在服务器上的文件名
	 * @param unknown $path 保存路径
	 * @return boolean
	 */
	function file_from_url_content($url) {
		// 设置运行时间为无限制
		set_time_limit ( 0 );
		$url = trim ( $url );
		$curl = curl_init ();
		// 设置你需要抓取的URL
		curl_setopt ( $curl, CURLOPT_URL, $url );
		// 设置header
		curl_setopt ( $curl, CURLOPT_HEADER, 0 );
		// 设置cURL 参数，要求结果保存到字符串中还是输出到屏幕上。
		curl_setopt ( $curl, CURLOPT_RETURNTRANSFER, 1 );
		// 运行cURL，请求网页
		$file = curl_exec ( $curl );
		// 关闭URL请求
		curl_close ( $curl );
		return $file;
	}