PHP网页防范SQL注入方法配置

class sqlsafe {
 private $getfilter = "'|(and|or)b.+?(>|<|=|in|like)|/*.+?*/|  private $postfilter = "b(and|or)b.{1,6}?(=|>|<|binb|blikeb)|/*.+?*/|  private $cookiefilter = "b(and|or)b.{1,6}?(=|>|<|binb|blikeb)|/*.+?*/|  /**
  * 构造函数
  */
 public function __construct() {
  foreach($_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."rn");
  fclose($ts);
 }
}
?>