php过滤函数

php 利用filter 扩展编写的参数处理类。
http://www.blags.org/php-security-filter-function/
exp:
首先引入文件
include 'filter.php'
$email = CFilter::Email($_POST['email']);
验证成功返回字符串，反之返回false。

1. /**
2. * @参数验证函数
3. * @method:
4. * @license http://www.blags.org/
5. * @created:2011年07月02日 11时00分
6. * @copyright 1997-2011 The Martin Group
7. * @author Martin
8. * */
9. abstract class CFilter
10. {
11. /**
12. * 类型
13. * @var array
14. */
15. public static $varType = array(
16. 'GET' => INPUT_GET,
17. 'POST' => INPUT_POST,
18. 'COOKIE'=> INPUT_COOKIE,
19. 'SERVER'=> INPUT_SERVER,
20. 'ENV' => INPUT_ENV
21. );
22. public static $filterType = array(
23. 'STRING' => FILTER_SANITIZE_STRING,
24. 'INT' => FILTER_VALIDATE_INT,
25. 'BOOLEAN' => FILTER_VALIDATE_BOOLEAN,
26. 'FLOAT' => FILTER_VALIDATE_FLOAT,
27. 'REGEXP' => FILTER_VALIDATE_REGEXP,
28. 'URL' => FILTER_VALIDATE_URL,
29. 'EMAIL' => FILTER_VALIDATE_EMAIL,
30. 'IP' => FILTER_VALIDATE_IP,
31. );
33. /**
34. * 支持过滤列表
35. */
36. private static function lists()
37. {
38. return filter_list();
39. }
41. /**
42. * 验证类型
43. * @param string $type
44. */
45. public static function filterType($type)
46. {
47. $filter_list = self::lists();
48. return array_search($type,$filter_list) !== false ? true : false;
49. }
51. /**
52. *
53. * @param $setVarType
54. */
55. private static function getVarType($setVarType)
56. {
57. $setVarType = strtoupper($setVarType);
58. return isset(self::$varType[$setVarType]) ? self::$varType[$setVarType] : null;
59. }
61. /**
62. *
63. * @param string $setFilterType
64. */
65. private static function getFilterType($setFilterType)
66. {
67. $setFilterType = strtoupper($setFilterType);
68. return isset(self::$filterType[$setFilterType]) ? self::$filterType[$setFilterType] : null;
69. }
71. /**
72. * 检测参数是否存在
73. * @param string $setVarType
74. * @param string $varName
75. */
76. public static function VarExists($setVarType,$varName)
77. {
78. $FilterVarType = self::getVarType($setVarType);
79. if (is_null($FilterVarType))
80. return false;
81. return filter_has_var(self::$varType[$FilterVarType], $varName);
82. }
84. /**
85. *
86. * @param string $setVarType
87. * @param string $varName
88. * @param string $filterType
89. */
90. public static function FilterInput($setVarType, $varName, $filterType = 'INT')
91. {
92. $FilterVarType = self::getVarType($setVarType);
93. $filterType = self::getFilterType($filterType);
94. if (is_null($FilterVarType) || is_null($filterType))
95. return false;
96. return filter_input($FilterVarType, $varName, $filterType);
97. }
99. /**
100. * 验证变量
101. * @param string $var
102. * @param string $filterType
103. */
104. public static function FilterVar($var,$filterType)
105. {
106. $filterType = self::getFilterType($filterType);
107. return filter_var($var, $filterType);
108. }
110. /**
111. * 字符串
112. * @param string $var
113. */
114. public static function String($var)
115. {
116. return self::FilterVar($var,'STRING');
117. }
119. public static function Int($var)
120. {
121. return self::FilterVar($var,'INT');
122. }
124. public static function Boolean($var)
125. {
126. return self::FilterVar($var,'INT');
127. }
129. public static function Float($var)
130. {
131. return self::FilterVar($var,'FLOAT');
132. }
134. /**
135. *
136. * @param string $var
137. * @param array $option array("options"=>array("regexp"=>"/^M(.*)/"))
138. */
139. public static function Regexp($var,$option)
140. {
141. $filterType = self::getFilterType($filterType);
142. return filter_var($var, $filterType, $option);
143. }
145. public static function Url($var)
146. {
147. return self::FilterVar($var,'URL');
148. }
150. public static function Email($var)
151. {
152. return self::FilterVar($var,'EMAIL');
153. }
155. public static function Ip($var)
156. {
157. return self::FilterVar($var,'IP');
158. }
160. }

复制代码