从360提供的PHP防SQL注入代码改成的一个类

<?php
02
class sqlsafe {

    private $getfilter = "'|(and|or)\\b.+?(>|<|=|in|like)|\\/\\*.+?\\*\\/|<\\s*script\\b|\\bEXEC\\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\\s+(TABLE|DATABASE)";

    private $postfilter = "\\b(and|or)\\b.{1,6}?(=|>|<|\\bin\\b|\\blike\\b)|\\/\\*.+?\\*\\/|<\\s*script\\b|\\bEXEC\\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\\s+(TABLE|DATABASE)";

    private $cookiefilter = "\\b(and|or)\\b.{1,6}?(=|>|<|\\bin\\b|\\blike\\b)|\\/\\*.+?\\*\\/|<\\s*script\\b|\\bEXEC\\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\\s+(TABLE|DATABASE)";

    /**

     * 构造函数

     */

    public function __construct() {

        foreach(＄＿GET as $key=>$value){$this->stopattack($key,$value,$this->getfilter);}

        foreach(＄＿POST as $key=>$value){$this->stopattack($key,$value,$this->postfilter);}

        foreach(＄＿COOKIE as $key=>$value){$this->stopattack($key,$value,$this->cookiefilter);}

    }

    /**

     * 参数检查并写日志

     */

    public function stopattack($StrFiltKey, $StrFiltValue, $ArrFiltReq){

        if(is_array($StrFiltValue))$StrFiltValue = implode($StrFiltValue);

        if (preg_match("/".$ArrFiltReq."/is",$StrFiltValue) == 1){  

            $this->writeslog(＄＿SERVER["REMOTE_ADDR"]."    ".strftime("%Y-%m-%d %H:%M:%S")."    ".＄＿SERVER["PHP_SELF"]."    ".＄＿SERVER["REQUEST_METHOD"]."    ".$StrFiltKey."    ".$StrFiltValue);

            showmsg('您提交的参数非法,系统已记录您的本次操作！','',0,1);

        }

    }

    /**

     * SQL注入日志

     */

    public function writeslog($log){

        $log_path = CACHE_PATH.'logs'.DIRECTORY_SEPARATOR.'sql_log.txt';

        $ts = fopen($log_path,"a+");

        fputs($ts,$log."\r\n");

        fclose($ts);

    }
}

?>