* @param string $value 需要过滤的值
* @return string
*/
function fliter_str($value) {
$badstr = array(" ", "%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);
$temp = array(':/'," ", "..");
if (str_replace($temp, '', $tmpname) !== $tmpname) {
return false;
}
return $fileName;
}
/**
* 过滤目录
* Controller中使用方法：$this->controller->filter_path($path)
* @param string $path
* @return array
*/
public function filter_path($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 $string
* @return string
*/
public function filter_phptag($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 $value 需要过滤的值
* @return string
*/
public function str_out($value) {
$badstr = array("<", ">", "%3C", "%3E");
$newstr = array("<", ">", "<", ">");
$value = str_replace($newstr, $badstr, $value);
return stripslashes($value); //下划线
}
