无法使用php从动态创建的添加删除字段中插入数据

Question

我正在尝试使用 php 从动态创建的数据库中添加删除字段插入数据，但无法执行。我只能从原始表单插入数据。我的表格看起来像这样。请帮助我。我的数据看起来像这样 <?phprequire_once "conn.php"; $ch_direction= $ch_direction_through==$reg_id="";if($_SERVER["REQUEST_METHOD"] == "POST"){      for ($i=0; $i < count($_POST['ch_direction']); $i++ ){        $ch_direction = trim($_POST["ch_direction"][$i]);        $ch_direction_through = trim($_POST["ch_direction_through"][$i]);        $reg_id= $_POST['reg_id'][$i];        $sql = "INSERT INTO bps_registration_charkilla (ch_direction, ch_direction_through,reg_id) VALUES (?, ?, ?)";           if($stmt = mysqli_prepare($conn, $sql)){            mysqli_stmt_bind_param($stmt, "sss",$ch_direction, $ch_direction_through, $reg_id);            $reg_id=$reg_id;            $ch_direction=$ch_direction;             $ch_direction_through=$ch_direction_through;             if(mysqli_stmt_execute($stmt)){                if(!empty($reg_id)){                    $success = "Submitted form successfully sent";                         header("location: registration_detail.php?success=$success&id=".$reg_id);                    exit();                } else {                    header("location: registration_detail.php");                    exit();                }            } else {                echo "Something went wrong. Please try again later.";            }        }    }    mysqli_close($conn);}?>$(document).ready(function() {    var max_fields = 15; //maximum input boxes allowed    var wrapper = $(".input_fields_wrap"); //Fields wrapper    var add_button = $(".add_field_button"); //Add button ID    var x = 1; //initlal text box count    $(add_button).click(function(e){ //on add input button clicf k        e.preventDefault();        if(x < max_fields) { //max input box allowed            x++; //text box increment        }    });    $(wrapper).on("click",".remove_field", function(e) { //user click on remove text        e.preventDefault();        $(this).parent('div').remove(); x--;    });});

Answer 1

因为你有一个标题，代码将插入单行并对请求的文件做标题。因此，删除两个标题。

Answer 2

您在循环内分配变量，但在循环后仅插入一次数据库。将您的数据库插入放入循环中，如下所示（为了更好地理解这个想法，我保持简短）：

for ($i=0; $i < count($_POST['ch_direction']); $i++ ) { // Here you start each loop

    $ch_direction = trim($_POST["ch_direction"][$i]);

    $ch_direction_through = trim($_POST["ch_direction_through"][$i]);

    $reg_id= $_POST['reg_id'][$i];

    $sql = "INSERT INTO bps_registration_charkilla (ch_direction, ch_direction_through,reg_id) VALUES (?, ?, ?)";   

    ...

    if($stmt = mysqli_prepare($conn, $sql)) ... // Here you prepare the statement for the current element in the loop

    ...

    if(mysqli_stmt_execute($stmt)) ... // Here you actually insert current loop element into the database

    ...

} // End of the loop