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：

<?php
/**
* @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 $host_name_
*/
/**
* @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 $request_header_;
/**
* @保存响应头信息
*/
private $response_header_;
/**
* @body_ 用于保存curl请求返回的结果
*/
private $body_;
/**
* @读取cookie
*/
private $cookie_file_;
/**
* @写入cookie
*/
private $cookie_jar_;
/**
* @todo proxy
* @构造函数，初始化CURL回话
*/
public function Start($url){
$this->ch_ = curl_init($url);
curl_setopt($this->ch_, CURLOPT_HEADER, 1);
curl_setopt($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);
curl_setopt($this->ch_, CURLOPT_TIMEOUT, Curl::time_);
$this->body_=$this->Execx();
$header_size = curl_getinfo($this->ch_, CURLINFO_HEADER_SIZE);
$this->response_header_ = substr($this->body_, $start = 0, $offset = $header_size);
$this->response_header_ = http_parse_headers($this->response_header_);
print_r($this->response_header_);
return $this->Close($this->body_);
}
/**
* @读取cookie
*/
public function LoadCookie($url,$cookie_file){
$this->Start($url);
curl_setopt($this->ch_, CURLOPT_COOKIE, 1);
curl_setopt($this->ch_, CURLOPT_COOKIEFILE , $cookie_file);
$this->body_=$this->Execx();
return $this->Close($this->body_);
}
/**
* @写入cookie
*/
public function SaveCookie($url){
$this->Start($url);
curl_setopt($this->ch_, CURLOPT_COOKIE, 1);
curl_setopt($this->ch_, CURLOPT_COOKIEFILE ,'cookie.txt');
curl_setopt($this->ch_, CURLOPT_COOKIEJAR , 'cookie.txt');
$this->body_=$this->Execx();
return $this->Close($this->body_);
}
/**
* @设置HEADER
*/
public function SetHeader($headers = null){
if (is_array($headers) && count($headers) > 0) {
curl_setopt($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);
curl_setopt($this->ch_, CURLOPT_TIMEOUT, Curl::time_);
if (strpos($url, 'https') === 0) {
curl_setopt($this->ch_, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($this->ch_, CURLOPT_SSL_VERIFYPEER, 0);
}
$this->body_=$this->Execx();
return $this->Close($this->body_);
}
/**
* @POST请求
*/
public function Post($url, array $params = array()) {
$this->Start($url);
curl_setopt($this->ch_, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($this->ch_, CURLOPT_HTTPHEADER, array("Content-Type: application/x-www-form-urlencoded"));
curl_setopt($this->ch_, CURLOPT_POST, true);
curl_setopt($this->ch_, CURLOPT_TIMEOUT, Curl::time_);
if ($params) {
curl_setopt($this->ch_, CURLOPT_POSTFIELDS, http_build_query($params));
}
$this->body_=$this->Execx();
return $this->Close($this->body_);
}
/**
* @tips: google http head 方法
*/
public function Head($url, array $params = array()) {
$this->Start($url);
curl_setopt($this->ch_, CURLOPT_TIMEOUT, Curl::time_);
curl_setopt($this->ch_, CURLOPT_RETURNTRANSFER , 0);
curl_setOpt($this->ch_,CURLOPT_NOBODY, true);
$this->body_=$this->Execx();
return $this->Close($this->body_);
}
/**
* @执行CURL会话
*/
public function Execx(){
return curl_exec($this->ch_);
}
/**
* @关闭CURL句柄
*/
public function Close($body_){
if ($body_ === false) {
echo "CURL Error: " . curl_error($body_);
return false;
}
curl_close($this->ch_);
return $body_;
}
}

希望本文所述对大家的php程序设计有所帮助。