示例代码1: 用file_get_contents 以get方式获取内容
<?php

$url=’http://www.baidu.com/’;

$html = file_get_contents($url);
//print_r($http_response_header);
ec($html);
printhr();

printarr($http_response_header);

printhr();
?>

示例代码2: 用fopen打开url, 以get方式获取内容
<?

$fp = fopen($url, ‘r’);

printarr(stream_get_meta_data($fp));</wbr>

printhr();
while(!feof($fp)) {
$result .= fgets($fp, 1024);
}
echo “url body:    $result”;
printhr();

fclose($fp);
?>

示例代码3：用file_get_contents函数,以post方式获取url

<?php
$data = array (‘foo’ => ‘bar’);
$data = http_build_query($data);</wbr></wbr></wbr>

$opts = array (
‘http’ => array (
‘method’ => ‘POST’,
‘header’=> “Content-type: application/x-www-form-urlencodedrn” .
“Content-Length: “ . strlen($data) . “rn”,
‘content’ => $data
),
);</wbr></wbr>

$context = stream_context_create($opts);
$html = file_get_contents(‘http://localhost/e/admin/test.html’, false, $context);

echo $html;
?>

示例代码4：用fsockopen函数打开url，以get方式获取完整的数据，包括header和body
<?
function get_url ($url,$cookie=false) {
$url = parse_url($url);
$query = $url[path].”?”.$url[query];
ec(“Query:”.$query);
$fp = fsockopen( $url[host], $url[port]?$url[port]:80 , $errno, $errstr, 30);
if (!$fp) {
return false;
} else {
$request = “GET $query HTTP/1.1rn”;
$request .= “Host: $url[host]rn”;
$request .= “Connection: Closern”;
if($cookie) $request.=”Cookie:   $cookien”;
$request.=”rn”;
fwrite($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,”rnrn”);
$body=substr($body,4,strlen($body));
return $body;
}

return false;

}

?>

示例代码5：用fsockopen函数打开url，以POST方式获取完整的数据，包括header和body
<?
function HTTP_Post($URL,$data,$cookie, $referrer=””) {</wbr>

// parsing the given URL
$URL_Info=parse_url($URL);

// Building referrer
if($referrer==””) // if not given use this script as referrer
$referrer=”111”;

// making string from $data
foreach($data as $key=>$value)
$values[]=”$key=”.urlencode($value);
$data_string=implode(“&”,$values);</wbr></wbr></wbr>

// Find out which port is needed - if not given use standard (=80)
if(!isset($URL_Info[“port”]))
$URL_Info[“port”]=80;

// building POST-request:
$request.=”POST “.$URL_Info[“path”].” HTTP/1.1n”;
$request.=”Host: “.$URL_Info[“host”].”n”;
$request.=”Referer: $referern”;
$request.=”Content-type: application/x-www-form-urlencodedn”;
$request.=”Content-length: “.strlen($data_string).”n”;
$request.=”Connection: closen”;</wbr>

$request.=”Cookie:   $cookien”;

$request.=”n”;
$request.=$data_string.”n”;</wbr>

$fp = fsockopen($URL_Info[“host”],$URL_Info[“port”]);
fputs($fp, $request);
while(!feof($fp)) {
$result .= fgets($fp, 1024);
}
fclose($fp);

return $result;
}
printhr();
?>
示例代码6:使用curl库，使用curl库之前，你可能需要查看一下php.ini，查看是否已经打开了curl扩展

<?
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, ‘http://www.baidu.com/’);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);

echo $file_contents;
?>
关于curl库：
curl官方网站http://curl.haxx.se/
curl 是使用URL语法的传送文件工具，支持FTP、FTPS、HTTP HTPPS SCP SFTP TFTP TELNET DICT FILE和LDAP。curl 支持SSL证书、HTTP POST、HTTP PUT 、FTP 上传，kerberos、基于HTT格式的上传、代理、cookie、用户＋口令证明、文件传送恢复、http代理通道和大量其他有用的技巧

<?
function printarr(array $arr)
{
echo “<br> Row field count: “.count($arr).”<br>”;
foreach($arr as $key=>$value)
{

echo “$key=$value    <br>”;
}
}
?>