php 表单敏感字符过滤代码

1. /** 
2. * 表单生成验证文件 
3. */ 
4. $_form = new formHtmlFind(); 
5. class formHtmlFind{ 
6.         /** 
7.          * 输出表单函数 
8.          * $formKey  表单键 
9.          * $infoArray 更新时的原始信息数组 
10.          */ 
11.  
12.         public function formHtml($array,$infoArray='') 
13.         { 
14.                 // 检测数组是否存在 
15.                 if(emptyempty($array))return false; 
16.                 $newform = null; 
17.                 // 信息数组(更新信息) 
18.                 $this->infoArray = !emptyempty($infoArray)?$infoArray:array(); 
19.                 $this->array['class'] =  get_class_methods(get_class()); 
20.                 foreach ($array as $key =>$arr) 
21.                 { 
22.                         // 键值转换为纯英文 
23.                         $key = preg_replace("/[^a-z]/i",'',$key); 
24.                         // 生成表单 
25.                         $newform .= $this->outputForm($arr,$key); 
26.                 } 
27.                 // 输出表单 
28.                 return $newform.$this->jsError(); 
29.         } 
30.         /** 
31.          * 生成表单函数 
32.          */ 
33.         private function outputForm($arr,$key) 
34.         { 
35.                 $value = null; 
36.                 if(emptyempty($arr))return false; 
37.                 // input Type 
38.                 $type   = $key; 
39.                 // input NAME 
40.                 $name   = trim($arr[0]); 
41.                 // input 初始值 不包含多选,单选类 
42.                 $value  = (!emptyempty($this->infoArray[$name]))? trim($this->infoArray[$name]):trim($arr[1]); 
43.                 $value  = emptyempty($this->post[$name])? $value :trim($this->post[$name]); 
44.                 // input Title 
45.                 $title  = trim($arr[2]); 
46.                 // 样式 
47.                 $style  = trim($arr[3]); 
48.                 if($key!=="hidden") 
49.                 { 
50.                         $dt = "<dt>{$title}</dt><dd>"; 
51.                         // js错误提示 
52.                         $dd = "<tt id="J{$name}"></tt></dd>rn"; 
53.                 } 
54.                 return (!preg_match("/checkbox|select|radio/i",$key))? 
55.                 $dt.$this->newInput($type,$name,$value,$style,$title).$dd: 
56.                 $this->formSelect($type,$name,$arr[1],$title,$style); // 多选类 
57.         } 
58.         /** 
59.          * 提交数据检测 
60.          */ 
61.         public function postForm($array) 
62.         { 
63.                 // 检测数组是否存在 
64.                 if(emptyempty($array)||emptyempty($_POST))return false; 
65.                 $this->post           =  $_POST; 
66.                 $this->array['class'] =  get_class_methods(get_class()); 
67.                 foreach ($array as $key =>$arr) 
68.                 { 
69.                         // 键值转换为纯英文 
70.                         $key = preg_replace("/[^a-z]/i",'',$key); 
71.                         // 检测 注销file类表单 
72.                         if (!emptyempty($arr)&&'file' != $key)$newData[trim($arr[0])] = $this->postFind($arr,$key); 
73.                 } 
74.                 // 输出表单 
75.                 if(!emptyempty($this->error)) 
76.                 { 
77.                         return false; 
78.                 } 
79.                 else return $newData; 
80.         } 
81.         /** 
82.          * 生成表单 
83.          */ 
84.         private function newInput($type,$name,$value,$style,$title) 
85.         { 
86.                 switch ($type) 
87.                 { 
88.                         case 'text': 
89.                                 // 单行文本 
90.                                 return  "<input type="text" name="{$name}" value="{$value}" {$style}/>"; 
91.                                 break; 
92.                         case 'password': 
93.                                 //密码输入 
94.                                 return "<input type="password" name="{$name}" {$style}/>"; 
95.                                 break; 
96.                         case '': 
97.                                 //多行文本 
98.                                 return "<textarea name="{$name}" {$style}/>{$value}</textarea>"; 
99.                                 break; 
100.                         case 'hidden': 
101.                                 // 隐藏 
102.                                 return "<input type="hidden" name="{$name}" value="{$value}" {$style}/>"; 
103.                                 break; 
104.                         case 'file': 
105.                                 // 文件上传 
106.                                 return "<input type= "file"name="{$name}" {$style}/>"; 
107.                                 break; 
108.                         case 'submit': 
109.                                 // 提交 
110.                                 return "<input type="submit" name="{$name}" value="$value" $style}/>"; 
111.                                 break; 
112.                         default: 
113.                                 return "{$type}类型错误!!!"; 
114.                                 break; 
115.                 } 
116.         } 
117.         /** 
118.          * 提交信息检测 
119.          * 错误返回error 
120.          */ 
121.         private function postFind($arr,$key) 
122.         { 
123.                 if(emptyempty($arr))return false; 
124.                 $name = $title =$error =$find =$standard =null; 
125.                 // input NAME 
126.                 $name     = trim($arr[0]); 
127.                 // input Title 
128.                 $title    = trim($arr[2]); 
129.                 // 错误提示 
130.                 $error    = trim($arr[4]); 
131.                 // 检测类型 Y N 
132.                 $find     = trim($arr[5]); 
133.                 // 检测标准 
134.                 $standard = trim($arr[6]); 
135.                 // 
136.                 if(!emptyempty($standard))$this->error .=$this->ck_split($standard,$name,$title,$find,$error); 
137.                 // 转换为字符串 
138.                 if(is_array($this->post[$name]))$this->post[$name] = implode(",",$this->post[$name]); 
139.                 // 转义或其他转化 
140.                 $KKarray = array(); 
141.                 if(preg_match("/Y|N/is",$find)) 
142.                 { 
143.                         $KKarray       = split("_", $find); 
144.                         // 转义或过滤 
145.                         $escape_filter = (!emptyempty($KKarray[1]))?'ck_'.$KKarray[1]:''; 
146.                         // 输出通过检测的合法数据 
147.                         $data          = ($escape_filter)?$this->$escape_filter($this->post[$name]):$this->post[$name]; 
148.  
149.                 } 
150.                 else  $data        = ""; 
151.                 // 输出新的数据 
152.                 return $data; 
153.         } 
154.         /** 
155.          * 多选类表单生成 
156.          */ 
157.         private function formSelect($type,$name,$value,$title,$style) 
158.         { 
159.                 $outform = null; 
160.                 // 触发更新和提交动作时的初始 
161.                 $nowvalue = (!emptyempty($this->post[$name]))?$this->post[$name]:$this->infoarray[$name]; 
162.                 // 兼容多选的识别,转为数组 
163.                 if(!emptyempty($nowvalue))$valueArray = explode(",",$nowvalue); 
164.                 // 选项标题 
165.                 if(is_array($title)) 
166.                 { 
167.                         array_unshift($title,'选择'); 
168.                         $titarray = array_values($title); 
169.                 }else $titarray = explode("|",$title); 
170.                 // 选项值 
171.                 if(is_array($value)) 
172.                 { 
173.                         array_unshift($value,'选择'); 
174.                         $valarray  = array_keys($value); 
175.                         if(emptyempty($title))$titarray = array_values($value); 
176.                 } 
177.                 else $valarray = explode("|",$value); 
178.                 // 取消表单的初始默认值 
179.                 if(!emptyempty($this->post)&&!emptyempty($this->infoArray))$value = preg_replace("/Y_/i",'',$value); 
180.  
181.                 foreach ($valarray as $key =>$varl) 
182.                 { 
183.                         // 非默认的识别 
184.                         if(!emptyempty($valueArray))$select   = (in_array($varl,$valueArray))?'Y':''; 
185.                         //  判断是否为默认 
186.                         else $select   = (eregi("Y_",$varl))? 'Y':''; 
187.  
188.                         if($key >'0') 
189.                         { 
190.                                 $_title=($titarray[$key])? $titarray[$key]:$title; 
191.                                 switch ($type) 
192.                                 { 
193.                                         case 'select': 
194.                                                 if('Y' == $select)$select = 'selected'; 
195.                                                 $outform .=        sprintf("<option %s value="%s"/>%s</option>rn" 
196.                                                 ,$select,preg_replace("/Y_/i",'',$varl),$_title); 
197.                                                 break; 
198.                                         case 'radio': 
199.                                                 if('Y' == $select)$select = 'checked'; 
200.                                                 $outform .= sprintf("<label>%s<input %s type="radio" name="%s" value="%s" %s/></label>rn", 
201.                                                 $_title,$select,$name,$varl,$style); 
202.                                                 break; 
203.                                         case 'checkbox': 
204.                                                 if('Y' == $select)$select = 'checked'; 
205.                                                 $outform .= sprintf("<label>%s<input %s type="checkbox" name="%s[]" value="%s" %s/></label>rn",$_title,$select,$name,$varl,$style); 
206.                                                 break; 
207.                                 } 
208.                                 $select =null; 
209.                         } 
210.                 } 
211.                 // 下拉选择 
212.                 if($type =='select')$outform = sprintf('<select name="%s" %s>%s</select>',$name,$style,$outform); 
213.                 return sprintf("<dt>%s</dt><dd>%s<tt id="J%s"></tt></dd>rn",$titarray[0],$outform,$name); 
214.         } 
215.         /** 
216.          * 表单验证 及全部 ck_类函数 
217.          */ 
218.         private function ck_split($standard,$name,$title,$find,$error) 
219.         { 
220.                 //  非必填缺省跳过 
221.                 if(eregi('N',$find) && emptyempty($this->post[$name]))return false; 
222.                 // 必填缺省检测 
223.                 if(eregi('Y',$find) && emptyempty($this->post[$name]))return "["J{$name}","$error"],"; 
224.                 $t_error = null; 
225.                 // 多项检测 
226.                 $arr = explode(',',$standard); 
227.                 // POST数据检测 
228.                 if(!emptyempty($arr))foreach ($arr as $var) 
229.                 { 
230.                         if(trim($var)!='') 
231.                         { 
232.                                 switch ($this->post) 
233.                                 { 
234.                                         case is_array($this->post[$name]): 
235.                                                 // 数组类的检测 
236.                                                 foreach ($this->post[$name] as $_var) 
237.                                                 { 
238.                                                         $t_error.= ($this->ck_open($_var,trim($var)))?"":$error; 
239.                                                         if($t_error)break; 
240.                                                 } 
241.                                                 break; 
242.                                         default: 
243.                                                 $t_error.= ($this->ck_open($this->post[$name],trim($var)))?"":$error; 
244.                                                 break; 
245.                                 } 
246.                                 if($t_error)break; 
247.                         } 
248.                 } 
249.                 return ($t_error)? "["J{$name}","$t_error"],":""; 
250.         } 
251.         // 函数调用 
252.         private function ck_open($string,$str) 
253.         { 
254.                 $functi = $this->ck_detected($str); 
255.                 return ($this->$functi($string,$str))? true:false; 
256.         } 
257.         // 类型判断 
258.         private function ck_detected($str) 
259.         { 
260.                 $detect = (eregi("^[a-zA-Z]*$",$str))? "{$str}Detect":'lengthDetect'; 
261.                 if(!in_array($detect,$this->array['class'])) 
262.                 { 
263.                         location('index.php',$ck,' Lack of function !!!'); 
264.                 } 
265.                 return $detect; 
266.         } 
267.         //-------------------------------------以下为检测函数可外部调用 
268.         // 长度 
269.         public function lengthDetect($string,$str){ 
270.                 $len = split('-',trim($str)); 
271.                 return (strlen($string) > ($len[0]-1) && strlen($string) < ($len[1]+1))? true:false; 
272.         } 
273.         // 价格 
274.         public function moneyDetect($str){ 
275.                 return preg_match("/^(-|+)?d+(.d+)?$/",$str); 
276.         } 
277.         // 邮件 
278.         public function emailDetect($str){ 
279.                 return preg_match("/^w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*$/", $str); 
280.         } 
281.         // 网址 
282.         public function urlDetect($str){ 
283.                 return preg_match("/^http://[A-Za-z0-9]+.[A-Za-z0-9]+[/=?%-&_~`@[]':+!]*([^<>"])*$/", $str); 
284.         } 
285.         // 数字型 
286.         public function numDetect($str){ 
287.                 return is_numeric($str); 
288.         } 
289.         // 中文 
290.         public function cnDetect($str){ 
291.                 return preg_match("/^[x7f-xff]+$/", $str); 
292.         } 
293.         // 字母 
294.         public function enDetect($str){ 
295.                 return preg_match("/^[A-Za-z]+$/", $str); 
296.         } 
297.         // 数字字母混合 
298.         public function numenDetect($str){ 
299.                 return preg_match("/^([a-zA-Z0-9_-])+$/",$str); 
300.         } 
301.         // 电话号码 
302.         public function telDetect($str){ 
303.                 return ereg("^[+]?[0-9]+([xX-][0-9]+)*$", $str); 
304.         } 
305.         // 敏感词 
306.         public function keyDetect($str){ 
307.                 return (!preg_match("/$badkey/i",$str)); 
308.         } 
309.         //-----------------------------------------------------输出 
310.         // 字符替换 
311.         public function ck_filter($str){ 
312.                 $str=(is_array($str))? implode(",",$str):$str; 
313.                 $str=nl2br($str); //将回车替换为<br> 
314.                 $str=htmlspecialchars($str); //将特殊字元转成 HTML 格式。 
315.                 //$str=str_replace(array("　",'<? '),array(" ",'< ?'),$str); //替换空格替换为 
316.                 return $str; 
317.         } 
318.         // 转义 
319.         function ck_escape($str) 
320.         { 
321.                 if (!get_magic_quotes_gpc())return addslashes($str); 
322.                 return $str; 
323.         } 
324.         // MD5加密 
325.         public function ck_md5($str){ 
326.                 return  MD5($str); 
327.         } 
328.         // base64加密 
329.         public function ck_base64($str){ 
330.                 return  base64_encode($str); 
331.         } 
332.         // 时间 
333.         function ck_time($str){ 
334.                 // time_r() 来在公用函数文件 
335.                 if(!is_numeric($str)) 
336.                 { 
337.                         return time_r($str); 
338.                 } 
339.                 else return $str; 
340.         } 
341.         // 有条件注销(数字) 
342.         public function ck_cancel($str){ 
343.                 return (!is_numeric($str))? $str:""; 
344.         } 
345.         // 无条件注销 
346.         public function ck_delete(){ 
347.                 return null; 
348.         } 
349.         // js错误提示 
350.         private function jsError() 
351.         { 
352.                 if(emptyempty($this->error))return false; 
353.                 return  " 
354.                 <script  language=javascript> rn var error = new Array(".trim($this->error,',')."); 
355.                         rn for (i=0; i < error.length; i++){ 
356.                         rn document.getElementById(error[0]).innerHTML=error[1]; 
357.                          }rn </script> 
358.                 "; 
359.         } 
360. } 
361.  
362. // 演示: 
363. $form[1] =array( 
364. 'text'=>array('title','','产品名称','size=40','产品名称不可缺少!','Y','cn,1-30'), 
365. 'text1'=>array('categories','','产品名称','','','Y_base64'), 
366. 'select'=>array('superiors','||1|2|Y_3','产品类别|选择|1|2|3','','必选项','Y'), 
367. 'radio'=>array('superiors1','|1|Y_2|3','产品xun|产品1|产品2|产品3','','必选项','Y'), 
368. 'checkbox'=>array('superiors2',array(1=>'11',2=>'22',3=>'33'),'','','必选项','Y'), 
369. 'file'=>array('ddd','','文件'), 
370. ); 
371. $form =array ( 
372.   'login' =>  
373.   array ( 
374.     'text' =>  
375.     array ( 
376.       0 => 'user', 
377.       1 => '', 
378.       2 => '用户名', 
379.       3 => 'size=20', 
380.       4 => '!', 
381.       5 => 'Y', 
382.       6 => 'numen,6-12', 
383.     ), 
384.     'password' =>  
385.     array ( 
386.       0 => 'pass', 
387.       1 => '', 
388.       2 => '密 码', 
389.       3 => 'size=22', 
390.       4 => '密码格式错误!', 
391.       5 => 'Y_md5', 
392.       6 => 'numen,6-12', 
393.     ), 
394.     'radio' =>  
395.     array ( 
396.       0 => 'time', 
397.       1 => '|7200|3600|1800', 
398.       2 => 'cookies有效时间|2小时|1小时|30分钟', 
399.       3 => '', 
400.       4 => '', 
401.       5 => 'N_delete', 
402.       6 => '', 
403.     ), 
404.   ), 
405.   ); 
406.  
407. // 表单提交效验 
408. $past = $_form->postForm($form['login']); 
409. $dd = array('title'=>'标题','categories'=>'类别'); 
410. // $dd 为已有的信息(如更新时的信息输出) POST数据位内部处理具有优先权//开源代码Vevb.com 
411. if(!emptyempty($past)) 
412. { 
413.         echo "<pre>"; 
414.         print_r($past); 
415.         echo"</pre>"; 
416. } 
417. echo '<form method="POST" NAME="PostTopic" action="" enctype="multipart/form-data" style="margin:0px;">'; 
418. echo $_form->formHtml($form['login'],$dd); 
419. echo '<input type="submit" value="Y" name="B1"></form>';