php源码之使用fsockopen获取网页内容

PHP fsockopen函数说明：

Open Internet or Unix domain socket connection（打开套接字链接）

Initiates a socket connection to the resource specified by target .

fsockopen() returns a file pointer which may be used together with the other file functions (such as fgets() , fgetss() , fwrite() , fclose() , and feof() ).就是返回一个文件句柄

开启PHP fsockopen这个函数

PHP fsockopen需要 PHP.ini 中 allow_url_fopen 选项开启。

使用fsockopen获取网页内容

具体源代码如下：

<?php
$host = \"www.manongjc.com\";
$page = \"/index.htm\";
$fp = fsockopen( \"$host\", 80, $errno, $errdesc );
if ( ! $fp ) {
  die ( \"Couldn\'t connect to $host:\\nError: $errno\\nDesc: $errdesc\\n\" );
}

$request = \"GET $page HTTP/1.0\\r\\n\";
$request .= \"Host: $host\\r\\n\";
$request .= \"Referer: http://www.manongjc.com/page.html\\r\\n\";
$request .= \"User-Agent: PHP test client\\r\\n\\r\\n\";

$page = array();
fputs ( $fp, $request );
while ( ! feof( $fp ) ) {
  $page[] = fgets( $fp, 1024 );
}
fclose( $fp );
print \"the server returned \".(count($page)).\" lines!\";
?>