php实现httpRequest的方法

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懂视网

PHP发起HTTP请求方式有：

相关学习推荐：PHP编程从入门到精通

1、file_get_contents发送get请求

<?php
/**
 * 发送post请求
 * @param string $url 请求地址
 * @param array $post_data post键值对数据
 * @return string
 */
function send_post($url, $post_data) {
 $postdata = http_build_query($post_data);
 $options = array(
 'http' => array(
  'method' => 'POST',
  'header' => 'Content-type:application/x-www-form-urlencoded',
  'content' => $postdata,
  'timeout' => 15 * 60 // 超时时间（单位:s）
 )
 );
 $context = stream_context_create($options);
 $result = file_get_contents($url, false, $context);
 return $result;
}
$post_data = array(
'username' => 'abcdef',
'password' => '123456'
);
send_post('http://xxx.com', $post_data);

2、通过CURL发送get请求

<?php
$ch=curl_init('http://www.xxx.com/xx.html');
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch,CURLOPT_BINARYTRANSFER,true);
$output=curl_exec($ch);
$fh=fopen("out.html",'w');
fwrite($fh,$output);
fclose($fh);

3、通过fsocket发送get请求

/**
 * Socket版本
 * 使用方法：
 * $post_string = "app=socket&version=beta";
 * request_by_socket('blog.snsgou.com', '/restServer.php', $post_string);
 */
function request_by_socket($remote_server,$remote_path,$post_string,$port = 80,$timeout = 30) {
$socket = fsockopen($remote_server, $port, $errno, $errstr, $timeout);
if (!$socket) die("$errstr($errno)");
fwrite($socket, "POST $remote_path HTTP/1.0");
fwrite($socket, "User-Agent: Socket Example");
fwrite($socket, "HOST: $remote_server");
fwrite($socket, "Content-type: application/x-www-form-urlencoded");
fwrite($socket, "Content-length: " . （strlen($post_string) + 8） . "");
fwrite($socket, "Accept:*/*");
fwrite($socket, "");
fwrite($socket, "mypost=$post_string");
fwrite($socket, "");
$header = "";
while ($str = trim(fgets($socket, 4096))) {
$header .= $str;
}
$data = "";
while (!feof($socket)) {
$data .= fgets($socket, 4096);
}
return $data;
}

热心网友

这篇文章主要介绍了php实现httpRequest的方法,涉及php操作http的技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了php实现httpRequest的方法。分享给大家供大家参考。具体如下：
想从学校图书馆的网站上抓取数据处理之后在返回给浏览器，试了不少方法。首先试了http_request()，但是这个学院pecl_http支持，后来又试了网上流传甚广的class
HttpRequest，可能是我不会使用，也失败了。后来看到了函数httpRequest($url,
$post='',
$method='GET',
$limit=0,
$returnHeader=FALSE,
$cookie='',
$bysocket=FALSE,
$ip='',
$timeout=15,
$block=TRUE)，用它成功了，因此贴出来分享一下。函数代码如下：
代码如下:
<?php
/**
*
Respose
A
Http
Request
*
*
@param
string
$url
*
@param
array
$post
*
@param
string
$method
*
@param
bool
$returnHeader
*
@param
string
$cookie
*
@param
bool
$bysocket
*
@param
string
$ip
*
@param
integer
$timeout
*
@param
bool
$block
*
@return
string
Response
*/
function
httpRequest($url,$post='',$method='GET',$limit=0,$returnHeader=FALSE,$cookie='',$bysocket=FALSE,$ip='',$timeout=15,$block=TRUE)
{
$return
=
'';
$matches
=
parse_url($url);
!isset($matches['host'])
&&
$matches['host']
=
'';
!isset($matches['path'])
&&
$matches['path']
=
'';
!isset($matches['query'])
&&
$matches['query']
=
'';
!isset($matches['port'])
&&
$matches['port']
=
'';
$host
=
$matches['host'];
$path
=
$matches['path']
?
$matches['path'].($matches['query']
?
'?'.$matches['query']
:
'')
:
'/';
$port
=
!empty($matches['port'])
?
$matches['port']
:
80;
if(strtolower($method)
==
'post')
{
$post
=
(is_array($post)
and
!empty($post))
?
http_build_query($post)
:
$post;
$out
=
"POST
$path
HTTP/1.0rn";
$out
.=
"Accept:
*/*rn";
//$out
.=
"Referer:
$boarrlrn";
$out
.=
"Accept-Language:
zh-cnrn";
$out
.=
"Content-Type:
application/x-www-form-urlencodedrn";
$out
.=
"User-Agent:
$_SERVER[HTTP_USER_AGENT]rn";
$out
.=
"Host:
$hostrn";
$out
.=
'Content-Length:
'.strlen($post)."rn";
$out
.=
"Connection:
Closern";
$out
.=
"Cache-Control:
no-cachern";
$out
.=
"Cookie:
$cookiernrn";
$out
.=
$post;
}
else
{
$out
=
"GET
$path
HTTP/1.0rn";
$out
.=
"Accept:
*/*rn";
//$out
.=
"Referer:
$boarrlrn";
$out
.=
"Accept-Language:
zh-cnrn";
$out
.=
"User-Agent:
$_SERVER[HTTP_USER_AGENT]rn";
$out
.=
"Host:
$hostrn";
$out
.=
"Connection:
Closern";
$out
.=
"Cookie:
$cookiernrn";
}
$fp
=
fsockopen(($ip
?
$ip
:
$host),
$port,
$errno,
$errstr,
$timeout);
if(!$fp)
return
'';
else
{
$header
=
$content
=
'';
stream_set_blocking($fp,
$block);
stream_set_timeout($fp,
$timeout);
fwrite($fp,
$out);
$status
=
stream_get_meta_data($fp);
if(!$status['timed_out'])
{//未超时
while
(!feof($fp))
{
$header
.=
$h
=
fgets($fp);
if($h
&&
($h
==
"rn"
||
$h
==
"n"))
break;
}
$stop
=
false;
while(!feof($fp)
&&
!$stop)
{
$data
=
fread($fp,
($limit
==
0
||
$limit
>
8192
?
8192
:
$limit));
$content
.=
$data;
if($limit)
{
$limit
-=
strlen($data);
$stop
=
$limit
<=
0;
}
}
}
fclose($fp);
return
$returnHeader
?
array($header,$content)
:
$content;
}
}
?>

调用也很简单的。简单的例子：
代码如下:
echo
httpRequest('http://www.baidu.com');

希望本文所述对大家的php程序设计有所帮助。