详细代码如下：
复制代码 代码如下:
blackstr = array(
´/[\x7f-\xff]/´, //filter chinese include chinese symbol
´/\w/´ //filter all english symbol
);
return preg_replace($this->blackstr, ´´, $str);
}
}
class editorfilter extends filter { //for article editor filter(过滤在线编辑器内容)
function filtit($str) {
$this -> blackstr = array(
´/\&/´,
´/\´/´,
´/\/´,
´/\´,
´/\>/´,
´/\\\\/´,
´/\//´,
´/-/´,
´/\*/´,
´/ /´
);
$this -> whitestr = array(
´&´,
´'´,
´´,
´´>´,
´\´,
´/´,
´-´,
´*´,
´ ´
);
return preg_replace($this->blackstr, $this -> whitestr, $str);
}
}
class sqlfilter extends filter { //for filte sql query string(过滤如查询或其它sql语句)
function filtit($str) {
$this -> blackstr = array(
´/\´/´,
´/-/´
);
return preg_replace($this->blackstr, ´´, $str);
}
}
class filenamefilter extends filter { //for filte a file name(过滤文件名如下载文件名)
function filtit($str) {
$this -> blackstr = array(
´/[^a-za-z0-9_\.]|\\\\|\^|\[|\]/´
);
return preg_replace($this->blackstr, ´´, $str);
}
}
?>
使用方法如：
复制代码 代码如下:
$filter = new filenamefilter(); //定义实例
$downfile = $filter->filtit($_get[´fn´]); //调用过滤方法
http://www.bkjia.com/phpjc/320092.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/320092.htmltecharticle详细代码如下： 复制代码 代码如下: ?php abstract class filter { //filter parent class private $blackstr = array(); private $whitestr = array(); function filtit($str) {...