php发送get、post请求的6种方法简明总结

方法1: 用file_get_contents 以get方式获取内容：

<?php

$url='http://www.jb51.net/';

$html = file_get_contents($url);

echo $html;

?>

方法2: 用fopen打开url, 以get方式获取内容：

<?php

$fp = fopen($url, ‘r');

stream_get_meta_data($fp);

while(!feof($fp)) {

$result .= fgets($fp, 1024);

}

echo “url body: $result”;

fclose($fp);

?>

方法3：用file_get_contents函数,以post方式获取url

<?php

$data = array (‘foo' => ‘bar');

$data = http_build_query($data);

$opts = array (

‘http' => array (

‘method' => ‘POST',

‘header'=> “Content-type: application/x-www-form-urlencodedrn” .

“Content-Length: ” . strlen($data) . “rn”,

‘content' => $data

)

);

$context = stream_context_create($opts);

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

echo $html;

?>

方法4：用fsockopen函数打开url，以get方式获取完整的数据，包括header和body,fsockopen需要 PHP.ini 中 allow_url_fopen 选项开启

<?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/1.1rn”;

$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;

}

?>

方法5：用fsockopen函数打开url，以POST方式获取完整的数据，包括header和body

<?php

function HTTP_Post($URL,$data,$cookie, $referrer=”")

{

// 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);

// 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”;

$request.=”Cookie:  $cookien”;

$request.=”n”;

$request.=$data_string.”n”;

$fp = fsockopen($URL_Info["host"],$URL_Info["port"]);

fputs($fp, $request);

while(!feof($fp)) {

$result .= fgets($fp, 1024);

}

fclose($fp);

return $result;

}

?>

方法6:使用curl库，使用curl库之前，可能需要查看一下php.ini是否已经打开了curl扩展

<?php

$ch = curl_init();

$timeout = 5;

curl_setopt ($ch, CURLOPT_URL, ‘http://www.jb51.net/');

curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);

$file_contents = curl_exec($ch);

curl_close($ch);

echo $file_contents;

?>