一个基本的curl请求

gistfile1.php

<?php

  protected $timeout = 10;

  protected $connect_timeout = 2;

  private $return_transfer = TRUE;

  private $post = TRUE;

  /**
   * 构造CURL请求
   * @param $url
   * @param $posts
   */
  protected function request($url, $posts) {
    $ch = curl_init ();

    $options = array (
      CURLOPT_URL => $url,
//      CURLOPT_DNS_USE_GLOBAL_CACHE => false,
      CURLOPT_CONNECTTIMEOUT => $this->connect_timeout,
      CURLOPT_TIMEOUT => $this->timeout,
      CURLOPT_RETURNTRANSFER => $this->return_transfer,
      CURLOPT_POST => $this->post,
      CURLOPT_POSTFIELDS => $posts,
      CURLOPT_USERAGENT => $_SERVER['HTTP_USER_AGENT']//'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0'
    );

    curl_setopt_array ( $ch, $options );

    $retval = curl_exec ( $ch );

    if ($retval === FALSE) {
      $retval = "cURL Error: " . curl_error($ch);
    }

    curl_close($ch);

    return $retval;
  }