php中fsockopen采集网页内容实例
fsockopen是php中一个比较实用的函数了,下面我来介绍利用fsockopen函数来采集网页的程序.
用法:int fsockopen(string hostname,int port,int [errno],string [errstr],int [timeout]);
一个采集网页实例,代码如下:
<?php function get_url($url,$cookie=false) { $url = parse_url($url); $query = $url[path] . "?" . $url[query]; echo "Query:" . $query; $fp = fsockopen($url[host], $url[port] ? $url[port] : 80, $errno, $errstr, 30); if (!$fp) { return false; } else { $request = "GET $query HTTP/1.1\r\n"; $request.= "Host: $url[host]\r\n"; $request.= "Connection: Close\r\n"; if ($cookie) $request.= "Cookie: $cookie\n"; $request.= "\r\n"; fwrite($fp, $request); while (!@feof($fp)) { $result.= @fgets($fp, 1024); } fclose($fp); return $result; } } //获取url的html部分,去掉header function GetUrlHTML($url, $cookie=false) { $rowdata = get_url($url, $cookie); if ($rowdata) { $body = stristr($rowdata, "\r\n\r\n"); $body = substr($body, 4, strlen($body)); return $body; } return false; } ?>
被禁用后的解决方法:
服务器同时禁用了fsockopen pfsockopen,那么用其他函数代替,如stream_socket_client(),注意:stream_socket_client()和fsockopen()的参数不同.
fsockopen:替换为 stream_socket_client,然后,将原fsockopen函数中的端口参数"80"删掉,并加到$host.
例,代码如下:
<?php $fp = fsockopen($host, 80, $errno, $errstr, 30); //或 $fp = fsockopen($host, $port, $errno, $errstr, $connection_timeout); //修改后: $fp = stream_socket_client("tcp://" . $host . "80", $errno, $errstr, 30); //或 $fp = stream_socket_client("tcp://" . $host . ":" . $port, $errno, $errstr, $connection_timeout); ?>
教程网址:http://www.phprm.com/develop/fs4907.html
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