PHP：6种GET和POST请求发送方法

在i94web博客中，我试过了畅言和多说两种社会化评论框，后来还是抛弃了畅言，不安全。

无论是畅言还是多说，我都需要从远程抓取文章的评论数，然后存入本地数据库。对于多说，请求的格式如下：

// 获取评论次数,参数是文章ID

function getCommCount($postid)

{

    $jsondata = file_get_contents("http://api.duoshuo.com/threads/counts.json?short_name=i94web&threads=$postid");

    // 设置true返回数组,不设置或者是false则返回对象

    $resjson= json_decode($jsondata,true);

    return $resjson['response'][$postid]['comments'];

}

 

对于远程请求，有很多种方法。今天，LZ就搜罗了六种，供大家参考。

1、用file_get_contents 以get方式获取内容：

<?php

$url='http://www.ido321.com/';

$html = file_get_contents($url);

echo $html;

?>

 

   2、用fopen打开url，用get方式获取

$fp = fopen($url, 'r');

stream_get_meta_data($fp);

while(!feof($fp)) {

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

}

echo "url body: $result";

fclose($fp);

 

 

3、用file_get_contents 以post方式获取内容：

$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;

 

 

    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

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;

}

 

 

     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='')

{

 

// 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;

}

 

 

    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

$ch = curl_init();

$timeout = 5;

curl_setopt ($ch, CURLOPT_URL, ‘http://www.ido321.com/');

curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);

$file_contents = curl_exec($ch);

curl_close($ch);

 

echo $file_contents;

 

原文首发：http://www.ido321.com/1297.html

下一篇：CSS 3的display：盒类型详解