这篇文章主要介绍了PHP封装CURL扩展类,实例分析了基于curl发送post、get请求及操作cookie等相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下。

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：

1. <?php
2. /**
3. * @description: 封装CURL扩展
4. * @date: 2014-07-28 16:04
5. */
6. /**
7. * @编码规范
8. * @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
9. * @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
10. * @function 函数名与类名规则相同 eg: function SendRequest
11. * @params 函数形参规则与变量名相同
12. * @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_
13. */
14. /**
15. * @要求
16. *
17. */
18. class Curl{
19. /**
20. * @请求的host
21. */
22. private $host_;
23. /**
24. * @curl 句柄
25. */
26. private $ch_;
27. /**
28. * @超时限制时间
29. */
30. const time_=5;
31. /**
32. * @请求的设置
33. */
34. private $options_;
35. /**
36. * @保存请求头信息
37. */
38. private $request_header_;
39. /**
40. * @保存响应头信息
41. */
42. private $response_header_;
43. /**
44. * @body_ 用于保存curl请求返回的结果
45. */
46. private $body_;
47. /**
48. * @读取cookie
49. */
50. private $cookie_file_;
51. /**
52. * @写入cookie
53. */
54. private $cookie_jar_;
55. /**
56. * @todo proxy
57. * @构造函数，初始化CURL回话
58. */
59. public function Start($url){
60. $this->ch_ = curl_init($url);
61. curl_setopt($this->ch_, CURLOPT_HEADER, 1);
62. curl_setopt($this->ch_, CURLOPT_RETURNTRANSFER , 1 );
63. }
64. /**
65. * @返回响应头
66. */
67. public function ResponseHeader($url){
68. if (!function_exists('http_parse_headers')) {
69. function http_parse_headers ($raw_headers){
70. $headers = array();
71. foreach (explode("\n", $raw_headers) as $i => $h) {
72. $h = explode(':', $h, 2);
73. if (isset($h[1])) {
74. if(!isset($headers[$h[0]])) {
75. $headers[$h[0]] = trim($h[1]);
76. } else if(is_array($headers[$h[0]])) {
77. $tmp = array_merge($headers[$h[0]],array(trim($h[1])));
78. $headers[$h[0]] = $tmp;
79. } else {
80. $tmp = array_merge(array($headers[$h[0]]),array(trim($h[1])));
81. $headers[$h[0]] = $tmp;
82. }
83. }
84. }
85. return $headers;
86. }
87. }
88. $this->Start($url);
89. curl_setopt($this->ch_, CURLOPT_TIMEOUT, Curl::time_);
90. $this->body_=$this->Execx();
91. $header_size = curl_getinfo($this->ch_, CURLINFO_HEADER_SIZE);
92. $this->response_header_ = substr($this->body_, $start = 0, $offset = $header_size);
93. $this->response_header_ = http_parse_headers($this->response_header_);
94. print_r($this->response_header_);
95. return $this->Close($this->body_);
96. }
97. /**
98. * @读取cookie
99. */
100. public function LoadCookie($url,$cookie_file){
101. $this->Start($url);
102. curl_setopt($this->ch_, CURLOPT_COOKIE, 1);
103. curl_setopt($this->ch_, CURLOPT_COOKIEFILE , $cookie_file);
104. $this->body_=$this->Execx();
105. return $this->Close($this->body_);
106. }
107. /**
108. * @写入cookie
109. */
110. public function SaveCookie($url){
111. $this->Start($url);
112. curl_setopt($this->ch_, CURLOPT_COOKIE, 1);
113. curl_setopt($this->ch_, CURLOPT_COOKIEFILE ,'cookie.txt');
114. curl_setopt($this->ch_, CURLOPT_COOKIEJAR , 'cookie.txt');
115. $this->body_=$this->Execx();
116. return $this->Close($this->body_);
117. }
118. /**
119. * @设置HEADER
120. */
121. public function SetHeader($headers = null){
122. if (is_array($headers) && count($headers) > 0) {
123. curl_setopt($this->ch_, CURLOPT_HTTPHEADER, $headers);
124. }
125. }
126. /**
127. * @GET请求
128. */
129. public function Get($url, array $params = array()) {
130. if ($params) {
131. if (strpos($url, '?')) {
132. $url .= "&".http_build_query($params);
133. }
134. else {
135. $url .= "?".http_build_query($params);
136. }
137. }
138. $this->Start($url);
139. curl_setopt($this->ch_, CURLOPT_TIMEOUT, Curl::time_);
140. if (strpos($url, 'https') === 0) {
141. curl_setopt($this->ch_, CURLOPT_SSL_VERIFYHOST, 0);
142. curl_setopt($this->ch_, CURLOPT_SSL_VERIFYPEER, 0);
143. }
144. $this->body_=$this->Execx();
145. return $this->Close($this->body_);
146. }
147. /**
148. * @POST请求
149. */
150. public function Post($url, array $params = array()) {
151. $this->Start($url);
152. curl_setopt($this->ch_, CURLOPT_SSL_VERIFYPEER, 0);
153. curl_setopt($this->ch_, CURLOPT_HTTPHEADER, array("Content-Type: application/x-www-form-urlencoded"));
154. curl_setopt($this->ch_, CURLOPT_POST, true);
155. curl_setopt($this->ch_, CURLOPT_TIMEOUT, Curl::time_);
156. if ($params) {
157. curl_setopt($this->ch_, CURLOPT_POSTFIELDS, http_build_query($params));
158. }
159. $this->body_=$this->Execx();
160. return $this->Close($this->body_);
161. }
162. /**
163. * @tips: google http head 方法
164. */
165. public function Head($url, array $params = array()) {
166. $this->Start($url);
167. curl_setopt($this->ch_, CURLOPT_TIMEOUT, Curl::time_);
168. curl_setopt($this->ch_, CURLOPT_RETURNTRANSFER , 0);
169. curl_setOpt($this->ch_,CURLOPT_NOBODY, true);
170. $this->body_=$this->Execx();
171. return $this->Close($this->body_);
172. }
173. /**
174. * @执行CURL会话
175. */
176. public function Execx(){
177. return curl_exec($this->ch_);
178. }
179. /**
180. * @关闭CURL句柄
181. */
182. public function Close($body_){
183. if ($body_ === false) {
184. echo "CURL Error: " . curl_error($body_);
185. return false;
186. }
187. curl_close($this->ch_);
188. return $body_;
189. }
190. }

希望本文所述对大家的php程序设计有所帮助。