@H_403_0@本文实例讲述了PHP封装CURL扩展类。分享给大家供大家参考。具体如下：

• @description: 封装CURL扩展
• @date: 2014-07-28 16:04
  */
  /**
• @编码规范
• @class 类名首字母大写，类名为多个单词,每个大字首字母大写 eg: class Curl,class CurlPage
• @variable 变量名小写,变量名为多个单词,每个单词小写，使用下划线_分割 eg: $curl_result
• @function 函数名与类名规则相同 eg: function SendRequest
• @params 函数形参规则与变量名相同
• @class-variable 成员变量,以下划线结尾,多个单词使用下划线分隔. eg: private $hostname
  */
  /**
• @要求

• */
  class Curl{
  /**

• @请求的host
  */
  private $host_;
  /**
• @curl 句柄
  */
  private $ch_;
  /**
• @超时限制时间
  */
  const time_=5;
  /**
• @请求的设置
  */
  private $options_;
  /**
• @保存请求头信息
  */
  private $requestheader;
  /**
• @保存响应头信息
  */
  private $responseheader;
  /**
• @body 用于保存curl请求返回的结果
  */
  private $body;
  /**
• @读取cookie
  */
  private $cookiefile;
  /**
• @写入cookie
  */
  private $cookiejar;
  /**
• @todo proxy
• @构造函数，初始化CURL回话
  */
  public function Start($url){
  $this->ch_ = curl_init($url);
  curlsetopt($this->ch,CURLOPT_HEADER,1);
  curlsetopt($this->ch,CURLOPT_RETURNTRANSFER,1 );
  }
  /**
• @返回响应头
  */
  public function ResponseHeader($url){
  if (!function_exists('http_parse_headers')) {
  function http_parse_headers ($raw_headers){
  $headers = array();
  foreach (explode("\n",$raw_headers) as $i => $h) {
  $h = explode(':',$h,2);
  if (isset($h[1])) {
  if(!isset($headers[$h[0]])) {
  $headers[$h[0]] = trim($h[1]);
  } else if(is_array($headers[$h[0]])) {
  $tmp = array_merge($headers[$h[0]],array(trim($h[1])));
  $headers[$h[0]] = $tmp;
  } else {
  $tmp = array_merge(array($headers[$h[0]]),array(trim($h[1])));
  $headers[$h[0]] = $tmp;
  }
  }
  }
  return $headers;
  }
  }
  $this->Start($url);
  curlsetopt($this->ch,CURLOPTTIMEOUT,Curl::time);
  $this->body_=$this->Execx();
  $header_size = curlgetinfo($this->ch,CURLINFO_HEADER_SIZE);
  $this->responseheader = substr($this->body_,$start = 0,$offset = $header_size);
  $this->responseheader = http_parse_headers($this->responseheader);
  print_r($this->responseheader);
  return $this->Close($this->body_);
  }
  /**
• @读取cookie
  */
  public function LoadCookie($url,$cookie_file){
  $this->Start($url);
  curlsetopt($this->ch,CURLOPT_COOKIE,CURLOPT_COOKIEFILE,$cookiefile);
  $this->body=$this->Execx();
  return $this->Close($this->body_);
  }
  /**
• @写入cookie
  */
  public function SaveCookie($url){
  $this->Start($url);
  curlsetopt($this->ch,'cookie.txt');
  curlsetopt($this->ch,CURLOPTCOOKIEJAR,'cookie.txt');
  $this->body=$this->Execx();
  return $this->Close($this->body_);
  }
  /**
• @设置HEADER
  */
  public function SetHeader($headers = null){
  if (is_array($headers) && count($headers) > 0) {
  curlsetopt($this->ch,CURLOPT_HTTPHEADER,$headers);
  }
  }
  /**
• @GET请求
  */
  public function Get($url,array $params = array()) {
  if ($params) {
  if (strpos($url,'?')) {
  $url .= "&".http_build_query($params);
  }
  else {
  $url .= "?".http_build_query($params);
  }
  }
  $this->Start($url);
  curlsetopt($this->ch,Curl::time_);
  if (strpos($url,'https') === 0) {
  curlsetopt($this->ch,CURLOPT_SSL_VERIFYHOST,0);
  curlsetopt($this->ch,CURLOPT_SSLVERIFYPEER,0);
  }
  $this->body=$this->Execx();
  return $this->Close($this->body_);
  }
  /**
• @POST请求
  */
  public function Post($url,array $params = array()) {
  $this->Start($url);
  curlsetopt($this->ch,array("Content-Type: application/x-www-form-urlencoded"));
  curlsetopt($this->ch,CURLOPT_POST,true);
  curlsetopt($this->ch,Curl::time_);
  if ($params) {
  curlsetopt($this->ch,CURLOPT_POSTFIELDS,http_buildquery($params));
  }
  $this->body=$this->Execx();
  return $this->Close($this->body_);
  }
  /**
• @tips: google http head 方法
  */
  public function Head($url,Curl::time_);
  curlsetopt($this->ch,0);
  curlsetOpt($this->ch,CURLOPTNOBODY,true);
  $this->body=$this->Execx();
  return $this->Close($this->body_);
  }
  /**
• @执行CURL会话
  */
  public function Execx(){
  return curlexec($this->ch);
  }
  /**
• @关闭CURL句柄
  */
  public function Close($body){
  if ($body === false) {
  echo "CURL Error: " . curlerror($body);
  return false;
  }
  curlclose($this->ch);
  return $body_;
  }
  }