php表单敏感字符过滤类

本文实例讲述了php表单敏感字符过滤类及其用法。分享给大家供大家参考。具体分析如下：

复制代码 代码如下:/** * 表单生成验证文件 */ $_form = new formHtmlFind(); class formHtmlFind{         /**          * 输出表单函数          * $formKey  表单键          * $infoArray 更新时的原始信息数组          */          public function formHtml($array,$infoArray="")         {                 // 检测数组是否存在                 if(emptyempty($array))return false;                 $newform = null;                 // 信息数组(更新信息)                 $this->infoArray = !emptyempty($infoArray)?$infoArray:array();                 $this->array["class"] =  get_class_methods(get_class());                 foreach ($array as $key =>$arr)                 {                         // 键值转换为纯英文                         $key = preg_replace("/[^a-z]/i","",$key);                         // 生成表单                         $newform .= $this->outputForm($arr,$key);                 }                 // 输出表单                 return $newform.$this->jsError();         }         /**          * 生成表单函数          */         private function outputForm($arr,$key)         {                 $value = null;                 if(emptyempty($arr))return false;                 // input Type                 $type   = $key;                 // input NAME                 $name   = trim($arr[0]);                 // input 初始值 不包含多选,单选类                 $value  = (!emptyempty($this->infoArray[$name]))? trim($this->infoArray[$name]):trim($arr[1]);                 $value  = emptyempty($this->post[$name])? $value :trim($this->post[$name]);                 // input Title                 $title  = trim($arr[2]);                 // 样式                 $style  = trim($arr[3]);                 if($key!=="hidden")                 {                         $dt = "<dt>{$title}</dt><dd>";                         // js错误提示                         $dd = "<tt id="J{$name}"></tt></dd>rn";                 }                 return (!preg_match("/checkbox|select|radio/i",$key))?                 $dt.$this->newInput($type,$name,$value,$style,$title).$dd:                 $this->formSelect($type,$name,$arr[1],$title,$style); // 多选类         }         /**          * 提交数据检测          */         public function postForm($array)         {                 // 检测数组是否存在                 if(emptyempty($array)||emptyempty($_POST))return false;                 $this->post           =  $_POST;                 $this->array["class"] =  get_class_methods(get_class());                 foreach ($array as $key =>$arr)                 {                         // 键值转换为纯英文                         $key = preg_replace("/[^a-z]/i","",$key);                         // 检测 注销file类表单                         if (!emptyempty($arr)&&"file" != $key)$newData[trim($arr[0])] = $this->postFind($arr,$key);                 }                 // 输出表单                 if(!emptyempty($this->error))                 {                         return false;                 }                 else return $newData;         }         /**          * 生成表单          */         private function newInput($type,$name,$value,$style,$title)         {                 switch ($type)                 {                         case "text":                                 // 单行文本                                 return  "<input type="text" name="{$name}" value="{$value}" {$style}/>";                                 break;                         case "password":                                 //密码输入                                 return "<input type="password" name="{$name}" {$style}/>";                                 break;                         case "":                                 //多行文本                                 return "<textarea name="{$name}" {$style}/>{$value}</textarea>";                                 break;                         case "hidden":                                 // 隐藏                                 return "<input type="hidden" name="{$name}" value="{$value}" {$style}/>";                                 break;                         case "file":                                 // 文件上传                                 return "<input type= "file"name="{$name}" {$style}/>";                                 break;                         case "submit":                                 // 提交                                 return "<input type="submit" name="{$name}" value="$value" $style}/>";                                 break;                         default:                                 return "{$type}类型错误!!!";                                 break;                 }         }         /**          * 提交信息检测          * 错误返回error          */         private function postFind($arr,$key)         {                 if(emptyempty($arr))return false;                 $name = $title =$error =$find =$standard =null;                 // input NAME                 $name     = trim($arr[0]);                 // input Title                 $title    = trim($arr[2]);                 // 错误提示                 $error    = trim($arr[4]);                 // 检测类型 Y N                 $find     = trim($arr[5]);                 // 检测标准                 $standard = trim($arr[6]);                 //                 if(!emptyempty($standard))$this->error .=$this->ck_split($standard,$name,$title,$find,$error);                 // 转换为字符串                 if(is_array($this->post[$name]))$this->post[$name] = implode(",",$this->post[$name]);                 // 转义或其他转化                 $KKarray = array();                 if(preg_match("/Y|N/is",$find))                 {                         $KKarray       = split("_", $find);                         // 转义或过滤                         $escape_filter = (!emptyempty($KKarray[1]))?"ck_".$KKarray[1]:"";                         // 输出通过检测的合法数据                         $data          = ($escape_filter)?$this->$escape_filter($this->post[$name]):$this->post[$name];                  }                 else  $data        = "";                 // 输出新的数据                 return $data;         }         /**          * 多选类表单生成          */         private function formSelect($type,$name,$value,$title,$style)         {                 $outform = null;                 // 触发更新和提交动作时的初始                 $nowvalue = (!emptyempty($this->post[$name]))?$this->post[$name]:$this->infoarray[$name];                 // 兼容多选的识别,转为数组                 if(!emptyempty($nowvalue))$valueArray = explode(",",$nowvalue);                 // 选项标题                 if(is_array($title))                 {                         array_unshift($title,"选择");                         $titarray = array_values($title);                 }else $titarray = explode("|",$title);                 // 选项值                 if(is_array($value))                 {                         array_unshift($value,"选择");                         $valarray  = array_keys($value);                         if(emptyempty($title))$titarray = array_values($value);                 }                 else $valarray = explode("|",$value);                 // 取消表单的初始默认值                 if(!emptyempty($this->post)&&!emptyempty($this->infoArray))$value = preg_replace("/Y_/i","",$value);                  foreach ($valarray as $key =>$varl)                 {                         // 非默认的识别                         if(!emptyempty($valueArray))$select   = (in_array($varl,$valueArray))?"Y":"";                         //  判断是否为默认                         else $select   = (eregi("Y_",$varl))? "Y":"";                          if($key >"0")                         {                                 $_title=($titarray[$key])? $titarray[$key]:$title;                                 switch ($type)                                 {                                         case "select":                                                 if("Y" == $select)$select = "selected";                                                 $outform .=        sprintf("<option %s value="%s"/>%s</option>rn"                                                 ,$select,preg_replace("/Y_/i","",$varl),$_title);                                                 break;                                         case "radio":                                                 if("Y" == $select)$select = "checked";                                                 $outform .= sprintf("<label>%s<input %s type="radio" name="%s" value="%s" %s/></label>rn",                                                 $_title,$select,$name,$varl,$style);                                                 break;                                         case "checkbox":                                                 if("Y" == $select)$select = "checked";                                                 $outform .= sprintf("<label>%s<input %s type="checkbox" name="%s[]" value="%s" %s/></label>rn",$_title,$select,$name,$varl,$style);                                                 break;                                 }                                 $select =null;                         }                 }                 // 下拉选择                 if($type =="select")$outform = sprintf("<select name="%s" %s>%s</select>",$name,$style,$outform);                 return sprintf("<dt>%s</dt><dd>%s<tt id="J%s"></tt></dd>rn",$titarray[0],$outform,$name);         }         /**          * 表单验证 及全部 ck_类函数          */         private function ck_split($standard,$name,$title,$find,$error)         {                 //  非必填缺省跳过                 if(eregi("N",$find) && emptyempty($this->post[$name]))return false;                 // 必填缺省检测                 if(eregi("Y",$find) && emptyempty($this->post[$name]))return "["J{$name}","$error"],";                 $t_error = null;                 // 多项检测                 $arr = explode(",",$standard);                 // POST数据检测                 if(!emptyempty($arr))foreach ($arr as $var)                 {                         if(trim($var)!="")                         {                                 switch ($this->post)                                 {                                         case is_array($this->post[$name]):                                                 // 数组类的检测                                                 foreach ($this->post[$name] as $_var)                                                 {                                                         $t_error.= ($this->ck_open($_var,trim($var)))?"":$error;                                                         if($t_error)break;                                                 }                                                 break;                                         default:                                                 $t_error.= ($this->ck_open($this->post[$name],trim($var)))?"":$error;                                                 break;                                 }                                 if($t_error)break;                         }                 }                 return ($t_error)? "["J{$name}","$t_error"],":"";         }         // 函数调用         private function ck_open($string,$str)         {                 $functi = $this->ck_detected($str);                 return ($this->$functi($string,$str))? true:false;         }         // 类型判断         private function ck_detected($str)         {                 $detect = (eregi("^[a-zA-Z]*$",$str))? "{$str}Detect":"lengthDetect";                 if(!in_array($detect,$this->array["class"]))                 {                         location("index.php",$ck," Lack of function !!!");                 }                 return $detect;         }         //-------------------------------------以下为检测函数可外部调用         // 长度         public function lengthDetect($string,$str){                 $len = split("-",trim($str));                 return (strlen($string) > ($len[0]-1) && strlen($string) < ($len[1]+1))? true:false;         }         // 价格         public function moneyDetect($str){                 return preg_match("/^(-|+)?d+(.d+)?$/",$str);         }         // 邮件         public function emailDetect($str){                 return preg_match("/^w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*$/", $str);         }         // 网址         public function urlDetect($str){                 return preg_match("/^http://[A-Za-z0-9]+.[A-Za-z0-9]+[/=?%-&_~`@[]":+!]*([^<>"])*$/", $str);         }         // 数字型         public function numDetect($str){                 return is_numeric($str);         }         // 中文         public function cnDetect($str){                 return preg_match("/^[x7f-xff]+$/", $str);         }         // 字母         public function enDetect($str){                 return preg_match("/^[A-Za-z]+$/", $str);         }         // 数字字母混合         public function numenDetect($str){                 return preg_match("/^([a-zA-Z0-9_-])+$/",$str);         }         // 电话号码         public function telDetect($str){                 return ereg("^[+]?[0-9]+([xX-][0-9]+)*$", $str);         }         // 敏感词         public function keyDetect($str){                 return (!preg_match("/$badkey/i",$str));         }         //-----------------------------------------------------输出         // 字符替换         public function ck_filter($str){                 $str=(is_array($str))? implode(",",$str):$str;                 $str=nl2br($str); //将回车替换为<br>                 $str=htmlspecialchars($str); //将特殊字元转成 HTML 格式。                 //$str=str_replace(array("　","<? "),array(" ","< ?"),$str); //替换空格替换为                 return $str;         }         // 转义         function ck_escape($str)         {                 if (!get_magic_quotes_gpc())return addslashes($str);                 return $str;         }         // MD5加密         public function ck_md5($str){                 return  MD5($str);         }         // base64加密         public function ck_base64($str){                 return  base64_encode($str);         }         // 时间         function ck_time($str){                 // time_r() 来在公用函数文件                 if(!is_numeric($str))                 {                         return time_r($str);                 }                 else return $str;         }         // 有条件注销(数字)         public function ck_cancel($str){                 return (!is_numeric($str))? $str:"";         }         // 无条件注销         public function ck_delete(){                 return null;         }         // js错误提示         private function jsError()         {                 if(emptyempty($this->error))return false;                 return  "                 <script  language=javascript> rn var error = new Array(".trim($this->error,",").");                         rn for (i=0; i < error.length; i++){                         rn document.getElementById(error[0]).innerHTML=error[1];                          }rn </script>                 ";         } }  // 演示: $form[1] =array( "text"=>array("title","","产品名称","size=40","产品名称不可缺少!","Y","cn,1-30"), "text1"=>array("categories","","产品名称","","","Y_base64"), "select"=>array("superiors","||1|2|Y_3","产品类别|选择|1|2|3","","必选项","Y"), "radio"=>array("superiors1","|1|Y_2|3","产品xun|产品1|产品2|产品3","","必选项","Y"), "checkbox"=>array("superiors2",array(1=>"11",2=>"22",3=>"33"),"","","必选项","Y"), "file"=>array("ddd","","文件"), ); $form =array (   "login" =>    array (     "text" =>      array (       0 => "user",       1 => "",       2 => "用户名",       3 => "size=20",       4 => "!",       5 => "Y",       6 => "numen,6-12",     ),     "password" =>      array (       0 => "pass",       1 => "",       2 => "密 码",       3 => "size=22",       4 => "密码格式错误!",       5 => "Y_md5",       6 => "numen,6-12",     ),     "radio" =>      array (       0 => "time",       1 => "|7200|3600|1800",       2 => "cookies有效时间|2小时|1小时|30分钟",       3 => "",       4 => "",       5 => "N_delete",       6 => "",     ),   ),   );  // 表单提交效验 $past = $_form->postForm($form["login"]); $dd = array("title"=>"标题","categories"=>"类别"); // $dd 为已有的信息(如更新时的信息输出) POST数据位内部处理具有优先权if(!emptyempty($past)) {         echo "<pre>";         print_r($past);         echo"</pre>"; } echo "<form method="POST" NAME="PostTopic" action="" enctype="multipart/form-data" style="margin:0px;">"; echo $_form->formHtml($form["login"],$dd); echo "<input type="submit" value="Y" name="B1"></form>";

希望本文所述对大家的PHP程序设计有所帮助。