PHP编写的HTTP下载类代码

功能比较全的下载http资源类，同时可以获得http头的信息。

2. class DedeHttpDown
3. {
4. public $m_url = "";
5. public $m_urlpath = "";
6. public $m_scheme = "http";
7. public $m_host = "";
8. public $m_port = "80";
9. public $m_user = "";
10. public $m_pass = "";
11. public $m_path = "//m.sbmmt.com/m/";
12. public $m_query = "";
13. public $m_fp = "";
14. public $m_error = "";
15. public $m_httphead = "" ;
16. public $m_html = "";
18. //初始化系统
19. function PrivateInit($url)
20. {
21. $urls = "";
22. $urls = @parse_url($url);
23. $this->m_url = $url;
24. if(is_array($urls))
25. {
26. $this->m_host = $urls["host"];
27. if(!empty($urls["scheme"])) $this->m_scheme = $urls["scheme"];
29. if(!empty($urls["user"])){
30. $this->m_user = $urls["user"];
31. }
33. if(!empty($urls["pass"])){
34. $this->m_pass = $urls["pass"];
35. }
37. if(!empty($urls["port"])){
38. $this->m_port = $urls["port"];
39. }
41. if(!empty($urls["path"])) $this->m_path = $urls["path"];
42. $this->m_urlpath = $this->m_path;
44. if(!empty($urls["query"]))
45. {
46. $this->m_query = $urls["query"];
47. $this->m_urlpath .= "?".$this->m_query;
48. }
49. }
50. }
51. //打开指定网址
52. function OpenUrl($url)
53. {
54. //重设各参数
55. $this->m_url = "";
56. $this->m_urlpath = "";
57. $this->m_scheme = "http";
58. $this->m_host = "";
59. $this->m_port = "80";
60. $this->m_user = "";
61. $this->m_pass = "";
62. $this->m_path = "//m.sbmmt.com/m/";
63. $this->m_query = "";
64. $this->m_error = "";
65. $this->m_httphead = "" ;
66. $this->m_html = "";
67. $this->Close();
68. //初始化系统
69. $this->PrivateInit($url);
70. $this->PrivateStartSession();
71. }
73. //获得某操作错误的原因
74. function printError()
75. {
76. echo "错误信息：".$this->m_error;
77. echo "具体返回头：
    ";
78. foreach($this->m_httphead as $k=>$v)
79. {
80. &nb