敏感词过滤

/*第一种方式*/$sql="lect value from dede_sysconfig where varname='cfg石油类大学排名_notallowstr'";    $mingan=$link->query($sql);    $arr = $mingan->fetch_row();    //数组元素组合成字符串    $list="/".implode("|"尊重的反义词,$arr)."/i";    if(preg_match($list,$urname,$matches)){         echo "<script>alert('包含敏感词,不能注册');</script>";    } el {         $sql= "inrt into dede_member2 (urid,uname,email,pwd,mobile,jointime) values('现实美$urname','$urname','$email','$hashpwd','$mobile','$jointime')";        // echo "出错" . $sql . "<br>" . $conn->error;        //插入数据库        if(!mysqli_query($link,$sql)){            // echo strlen($hashpwd);             // echo "出错" . $sql . "<br>" . $conn->error;            echo "<script>alert('数据插入失败');window.location.href='/a/zhuce/index.html'</script>";        }        el{            echo  "<script>alert('注册成功！');window.location.href='/in2021给党的祝福语dex.php回归方程公式'</script>";          }     }