php发送get、post请求的6种方法代码示例

本文主要展示了php发送get、post请求的6种方法的代码示例,分别为使用file_get_contents 、fopen、fsockopen、curl来发送GET和POST请求，代码如下：

方法1: 用file_get_contents 以get方式获取内容：

1 <?php
2     $url=‘http://www.jb51.net/‘;
3     $html = file_get_contents($url);
4     echo $html;
5 ?>

方法2: 用fopen打开url, 以get方式获取内容：

1 <?php
2     $fp = fopen($url, ‘r‘);
3     stream_get_meta_data($fp);
4     while(!feof($fp)) {
5         $result .= fgets($fp, 1024);
6     }
7     echo “url body: $result”;
8     fclose($fp);
9 ?>

方法3：用file_get_contents函数,以post方式获取url

 1 <?php
 2     $data = array (‘foo‘ => ‘bar‘);
 3     $data = http_build_query($data);
 4
 5     $opts = array (
 6         ‘http‘ => array (
 7             ‘method‘ => ‘POST‘,
 8             ‘header‘=> “Content-type: application/x-www-form-urlencodedrn” . “Content-Length: ” . strlen($data) . “rn”,
10             ‘content‘ => $data
11         )
12     );
13
14     $context = stream_context_create($opts);
15     $html = file_get_contents(‘http://localhost/e/admin/test.html‘, false, $context);
16
17     echo $html;
18 ?>

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

 1 <?php
 2     function get_url ($url,$cookie=false)
 3     {
 4         $url = parse_url($url);
 5         $query = $url[path].”?”.$url[query];
 6         echo “Query:”.$query;
 7         $fp = fsockopen( $url[host], $url[port]?$url[port]:80 , $errno, $errstr, 30);
 8         if (!$fp) {
 9             return false;
10         } else {
11             $request = “GET $query HTTP/1.1rn”;
12             $request .= “Host: $url[host]rn”;
13             $request .= “Connection: Closern”;
14             if($cookie) $request.=”Cookie:  $cookien”;
15             $request.=”rn”;
16             fwrite($fp,$request);
17             while([email protected]feof($fp)) {
18                 $result .= @fgets($fp, 1024);
19             }
20             fclose($fp);
21             return $result;
22         }
23     }
24     //获取url的html部分，去掉header
25     function GetUrlHTML($url,$cookie=false)
26     {
27         $rowdata = get_url($url,$cookie);
28         if($rowdata)
29         {
30             $body= stristr($rowdata,”rnrn”);
31             $body=substr($body,4,strlen($body));
32             return $body;
33         }
34
35         return false;
36     }
37 ?>

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

 1 <?php
 2     function HTTP_Post($URL,$data,$cookie, $referrer=”")
 3     {
 4
 5         // parsing the given URL
 6         $URL_Info=parse_url($URL);
 7
 8         // Building referrer
 9         if($referrer==”") // if not given use this script as referrer
10             $referrer=”111″;
11
12         // making string from $data
13         foreach($data as $key=>$value)
14             $values[]=”$key=”.urlencode($value);
15         $data_string=implode(“&”,$values);
16
17         // Find out which port is needed – if not given use standard (=80)
18         if(!isset($URL_Info["port"]))
19             $URL_Info["port"]=80;
20
21         // building POST-request:
22         $request.=”POST “.$URL_Info["path"].” HTTP/1.1n”;
23         $request.=”Host: “.$URL_Info["host"].”n”;
24         $request.=”Referer: $referern”;
25         $request.=”Content-type: application/x-www-form-urlencodedn”;
26         $request.=”Content-length: “.strlen($data_string).”n”;
27         $request.=”Connection: closen”;
28
29         $request.=”Cookie:  $cookien”;
30
31         $request.=”n”;
32         $request.=$data_string.”n”;
33
34         $fp = fsockopen($URL_Info["host"],$URL_Info["port"]);
35         fputs($fp, $request);
36         while(!feof($fp)) {
37              $result .= fgets($fp, 1024);
38         }
39         fclose($fp);
40
41         return $result;
42     }
43 ?>

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

 1 <?php
 2     $ch = curl_init();
 3     $timeout = 5;
 4     curl_setopt ($ch, CURLOPT_URL, ‘http://www.jb51.net/‘);
 5     curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
 6     curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
 7     $file_contents = curl_exec($ch);
 8     curl_close($ch);
 9
10     echo $file_contents;
11 ?>