php发送post请求的方法

方法一：file_get_content

/**
 * 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' => 'test',
  'password' => '789789'
);
send_post('http://localhost', $post_data);

方法二：Socket版本

/**
 * Socket版本
 */

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;
}

使用方法：
$post_string = "app=socket&version=beta";
request_by_socket('chajia8.com', '/restServer.php', $post_string);

方法三：Curl版本

/**
 * Curl版本
 */

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;
}

使用方法：
$post_string = "app=request&version=beta";
request_by_curl('http://localhost/restServer.php', $post_string);

/**
 * Curl版本
 * GET方式中添加请求头信息header使用方法：
 */
function request_by_curl($remote_server,$header=[]) {
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $remote_server);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_USERAGENT, "www.baidu.com");
  curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  $data = curl_exec($ch);
  curl_close($ch);
  return $data;
}
//调用方式
$token = get_token();
$header  = array(
       'authorization:'.$token,
);
// print_r($header);die;
$info = request_by_curl($url,$header);

/**
 * Curl版本
 * post方式发送json数据
 */
function request_by_curl($remote_server, $post_data) {
      $post_string = json_encode($post_data);
      $ch = curl_init();
      curl_setopt($ch, CURLOPT_URL, $remote_server);
      curl_setopt($ch, CURLOPT_POSTFIELDS, $post_string);
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
      curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            'Content-Type: application/json',
            'Content-Length: ' . strlen($post_string))
        );
      $data = curl_exec($ch);
      curl_close($ch);
      return $data;
    }

//调用方式
$post_data = [
       'id'=>"12399",
      'secret'=>"829A63E1B862CD2A640D",
];
$url ="";
request_by_curl($url,$post_data);