/**

* 安全过滤类-过滤javascript,css,iframes,object等不安全参数 过滤级别高

* Controller中使用方法：$this->controller->fliter_script($value)

* @param string $value 需要过滤的值

* @return string

*/

function fliter_script($value){

$value = preg_replace("/(javascript:)?on(click|load|key|mouse|error|abort|move|unload|change|dblclick|move|reset|resize|submit)/i","&111n\\2",$value);

$value = preg_replace("/(.*?)<\/script>/si","",$value);

$value = preg_replace("/(.*?)<\/iframe>/si","",$value);

$value = preg_replace ("//iesU",'', $value);

return $value;

}

/**

* 安全过滤类-过滤HTML标签

* Controller中使用方法：$this->controller->fliter_html($value)

* @param string $value 需要过滤的值

* @return string

*/

function fliter_html($value){

if(function_exists('htmlspecialchars'))return htmlspecialchars($value);

return str_replace(array("&",'"',"'","<",">"), array("&","\"","'","<",">"), $value);

}

/**

* 安全过滤类-对进入的数据加下划线 防止SQL注入

* Controller中使用方法：$this->controller->fliter_sql($value)

* @param string $value 需要过滤的值

* @return string

*/

function fliter_sql($value){

$sql = array("select",'insert',"update","delete","\'","\/\*",

"\.\.\/","\.\/","union","into","load_file","outfile");

$sql_re = array("","","","","","","","","","","","");

return str_replace($sql, $sql_re, $value);

}

/**

* 安全过滤类-通用数据过滤

* Controller中使用方法：$this->controller->fliter_escape($value)

* @param string $value 需要过滤的变量

* @return string|array

*/

function fliter_escape($value){

if(is_array($value)){

foreach($value as $k => $v){

$value[$k]=self::fliter_str($v);

}

}else{

$value =self::fliter_str($value);

}

return $value;

}

/**

* 安全过滤类-字符串过滤 过滤特殊有危害字符

* Controller中使用方法：$this->controller->fliter_str($value)

* @param string $value 需要过滤的值

* @return string

*/

function fliter_str($value){

$badstr = array("\0","%00","\r",'&',' ','"',"'","<",">"," ","%3C","%3E");

$newstr = array('','','','&',' ','"',''', "<", ">", " ", "<", ">");

$value = str_replace($badstr, $newstr, $value);

$value = preg_replace('/&((#(\d{3,5}|x[a-fA-F0-9]{4}));)/', '&\\1', $value);

return $value;

}

/**

* 私有路劲安全转化

* Controller中使用方法：$this->controller->filter_dir($fileName)

* @param string $fileName

* @return string

*/

function filter_dir($fileName){

$tmpname = strtolower($fileName);

$temp = array(':/',"\0","..");

if(str_replace($temp,'', $tmpname)!== $tmpname){

returnfalse;

}

return $fileName;

}

/**

* 过滤目录

* Controller中使用方法：$this->controller->filter_path($path)

* @param string $path

* @return array

*/

publicfunction filter_path($path){

$path = str_replace(array("'",'#','=','`','$','%','&',';'),'', $path);

return rtrim(preg_replace('/(\/){2,}|(\\\){1,}/','/', $path),'/');

}

/**

* 过滤PHP标签

* Controller中使用方法：$this->controller->filter_phptag($string)

* @param string $string

* @return string

*/

publicfunction filter_phptag($string){

return str_replace(array(''), array('<?','?>'), $string);

}

/**

* 安全过滤类-返回函数

* Controller中使用方法：$this->controller->str_out($value)

* @param string $value 需要过滤的值

* @return string

*/

publicfunction str_out($value){

$badstr = array("<",">","%3C","%3E");

$newstr = array("<",">","<",">");

$value = str_replace($newstr, $badstr, $value);

return stripslashes($value);//下划线

}