还是我前两天写的代码，已经用于采集内容了，今天用来改进采集到的内容中的图片等远程文件的本地化，有时候还是会卡死，高手看看如何能防止卡死。
代码如下，这个代码还是提供两种方式实现本地化进行比较，时事证明这种流方式实现效率是提高了。
php code $url) { $tmp = parse_url($url); $host = $tmp['host']; $path = isset($tmp['path'])?$tmp['path']:'/'; empty($tmp['query']) or $path .= '?' . $tmp['query']; if (empty($tmp['port'])) { $port = $tmp['scheme'] == 'https'?443:80; } else $port = $tmp['port']; $fp = stream_socket_client($host:$port, $errno, $errstr, $timeout); if ($fp) { $rs[$id] = ''; $sockets[$id] = $fp; fwrite($fp, get $path http/1.1\r\nhost: $host\r\nuser-agent: $useragent\r\nconnection: close\r\n\r\n); } } // now, wait for the results to come back in while (count($sockets)) { $read = $sockets; // this is the magic function - explained below if (stream_select($read, $write = null, $e = null, $timeout)) { // readable sockets either have data for us, or are failed connection attempts foreach ($read as $r) { $id = array_search($r, $sockets); $data = fread($r, 8192); if (strlen($data) == 0) { fclose($r); $tmp = explode(\r\n\r\n, $rs[$id], 2); $rs[$id] = strpos($tmp[0], '200')?$tmp[1]:''; unset($sockets[$id]); } else $rs[$id] .= $data; } } } return $rs;}$rs = getmorecontent($urls);foreach($rs as $k => $v) { @file_put_contents($dir . 'b_' . basename($urls[$k]), $v);}$timeend = microtime(true);echo sprintf(spend time: %s second(s)\n, $timeend - $timestart);?>
------解决方案--------------------
由于php没有计时器，所以你不可能中断一个没有中断接口的函数的执行
所以底层函数都只适合于理想的条件下
我依然建议你使用多道的curl来完成你的工作php code$urls = array( 'http://www.jxcms.com/upload/2011/0518/0337319304.jpg', 'http://www.jxcms.com/upload/2011/0310/0951568835.jpg', 'http://www.tzksgs.com/upload/banner1.jpg', 'http://www.tzksgs.com/upload/banner2.jpg');$mh = curl_multi_init();foreach ($urls as $i => $url) { $conn[$i] = curl_init($url); curl_setopt($conn[$i], curlopt_returntransfer,1); curl_multi_add_handle($mh, $conn[$i]);}do { curl_multi_exec($mh, $active); //在这个循环中，你有机会中断程序的执行。curl_getinfo提供了连接的各种信息}while($active);foreach ($urls as $i => $url) { $fn = basename($url); file_put_contents($fn, curl_multi_getcontent($conn[$i])); curl_close($conn[$i]);}