PHP post & get请求

 <?php
 /**
  * HTTP 请求类
  */
 class HttpHelper {

     const METHOD_GET = 'GET';
     const METHOD_POST = 'POST';

     private static $_connectTimeout = 60;
     private static $_timeout = 60;

     /**
      * Http post请求
      * @param type $url  http url address
      * @param type $data post params name => value
      */
     public static function post($url, $data = array()){

         $queryString = self::buildHttpQueryString($data,  self::METHOD_POST);

         $response = self::makeHttpRequest($url, self::METHOD_POST,$queryString);
         return $response;
     }

     /**
      * http get 请求
      * @param type $url  http url address
      * @param type $data get params name => value
      */
     public static function get($url,$data = array()) {
         if(!empty($data)){
             $url .= "?" . self::buildHttpQueryString($data,  self::METHOD_GET);
         }
         $response = self::makeHttpRequest($url,  self::METHOD_GET);
         return $response;
     }

     /**
      * 构造并发送一个http请求
      * @param type $url
      * @param type $method
      * @param type $postFields
      * @return type
      */
     public static function makeHttpRequest($url,$method,$postFields = null) {
         $ch = curl_init();
         curl_setopt($ch, CURLOPT_URL, $url);
         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
         if(self::METHOD_POST == $method){
             curl_setopt($ch, CURLOPT_POST, 1);
             if(!empty($postFields)){
                 curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);
             }
         }
         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, self::$_connectTimeout);
         curl_setopt($ch, CURLOPT_TIMEOUT, self::$_timeout);
         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
         curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

         $result = curl_exec($ch);
         curl_close($ch);
         return $result;
     }

     /**
      * 构造http请求的查询字符串
      * @param array $params
      * @param type $method
      * @return string
      */
     public static function buildHttpQueryString(array $params, $method = self::METHOD_GET) {
         if(empty($params)){
             return '';
         }
         if(self::METHOD_GET == $method){
             $keys = array_keys($params);
             $values = self::urlEncode(array_values($params));
             $params = array_combine($keys, $values);
         }

         $fields = array();

         foreach ($params as $key => $value) {
             $fields[] = $key . '=' . $value;
         }
         return implode('&',$fields);
     }

     /**
      * url encode 函数
      * @param type $item  数组或者字符串类型
      * @return type
      */
     public static function urlEncode($item) {
         if(is_array($item)){
             return array_map(array('HttpHelper','urlEncode'), $item);
         }
         return rawurlencode($item);
     }

     /**
      * url decode 函数
      * @param type $item 数组或者字符串类型
      * @return type
      */
     public static function urlDecode($item){
         if(is_array($item)){
             return array_map(array('HttpHelper','urlDecode'), $item);
         }
         return rawurldecode($item);
     }
 }

使用方法：

echo HttpHelper::get('http://www.baidu.com', array('t' => 1));