$ip=$_SERVER[‘REMOTE_ADDR‘];

    $("#submit").on("click",function(){
         pcontent = $("#contain").val();
        check();
        ip=$("#username").attr("data-ip");
        
        $.ajax({
        url: "handle.php",
        dataType: "json",
        type: "POST",
        data: { type:"addboard",f_name:title,f_desc:pcontent},
        success:function(data){
            $("#notice").html("添加成功")
            console.log(data.toString());
           
        },
        error:function(data){
            console.log(data);
            $("#notice").html("添加失败，请稍后再试");
        }
    });
    })

$f_ip=isset( $_POST[‘ip‘])?$_POST[‘ip‘]:"";

    $sql="INSERT into t_article (f_parent_id, f_title, f_username, f_board_id,f_post_time, f_ip) values";
    $sql.="(‘".$f_parent_id."‘,‘".$f_title."‘,‘".$f_username."‘,‘".$f_board_id."‘,‘".$f_post_time."‘,‘".$f_ip."‘)";
    $rs1=$conn->query($sql);
    $ttt=mysqli_insert_id($conn);