php发送post请求的三种方法

方法一:

/**
  * 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 ;
}
 
//使用方法
$post_data = array (
   'username' => 'stclair2201' ,
   'password' => 'handan'
);
send_post( 'http://www.baidu.com' , $post_data );

方法二:Socket版本

<?php
/**
  * Socket版本
  * 使用方法:
  * $post_string = "app=socket&version=beta";
  * request_by_socket('baidu.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 ;
}
?>

方法三:Curl版本

<?php
/**
  * Curl版本
  * 使用方法:
  * $post_string = "app=request&version=beta";
  * request_by_curl('http://www.baidu.com', $post_string);
  */
function request_by_curl( $remote_server , $post_string ) {
   $ch = curl_init();
   curl_setopt( $ch , CURLOPT_URL, $remote_server );
   curl_setopt( $ch , CURLOPT_POSTFIELDS, 'mypost=' . $post_string );
   curl_setopt( $ch , CURLOPT_RETURNTRANSFER, true);
   curl_setopt( $ch , CURLOPT_USERAGENT, "jb51.net's CURL Example beta" );
   $data = curl_exec( $ch );
   curl_close( $ch );
 
   return $data ;
}
?>
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