如何使用表格中的按鈕刪除特定的數據行？

Question

我有一個user class在其中我從MYSQL數據庫創建了一個結果表。 我想在表格的每一行上都有一個按鈕，用戶可以單擊該按鈕以刪除該特定行。

public function displayMyBooking() { //Added function

    $userid = $this->data()->id; //gets id of user currently logged in
    $query = DB::getInstance()->query("SELECT bookingdate, roomid, period FROM booking WHERE id = {$userid}"); //queries database for all bookings made with the id of the current user
    $amount = $query->count(); //returns amount of results
    $x=0;

    //create table
    $bookingtable = "<table style='width:100%' class='table'>";
    $bookingtable .= "<tr>";
    $bookingtable .= "<th>Room ID</th>";
    $bookingtable .= "<th>Period</th>";
    $bookingtable .= "<th>Booking Date</th>";
    $bookingtable .= " </tr>";

for($x=0; $x<$amount; $x++) { //loop through and output data into table according to amount of results returned
    $bookingtable .= "<tr>";
    $bookingtable .= "<td>" . $query->results()[$x]->roomid. "</td>";
    $bookingtable .= "<td>" . $query->results()[$x]->period. "</td>";
    $bookingtable .= "<td>" . $query->results()[$x]->bookingdate. "</td>";
    $bookingtable .= "<td><input type='submit' name='delete' value='Delete'></td>";
    $bookingtable .= "</tr>";
    $bookingtable .= "";
}
return $bookingtable;       
}

該功能可以通過以下方式在我的頁面上訪問

       <?php
            $table = $user->displayMyBooking();
            echo $table;
        ?>

每個預訂（我正在開發一個房間預訂系統）都具有一個唯一的復合主鍵，該鍵由預訂日期，預訂期間，用戶ID等創建。我如何使用表中包含的刪除按鈕刪除該特定行？

Answer 1

你可以試試這個

<button name="delete_row' value="1234">Delete</button>

或為每一行創建表格，例如

<form action="delete.php">
<input type="hidden" name="row_id" value="1235" />
<td><input type="submit" value="Delete"></td>
<input

Answer 2

我沒有在displayMyBooking()方法中使用任何<form> ，因此在那里使用單獨的Submit輸入元素毫無意義。 相反，只需更改此語句

$bookingtable .= "<td><input type='submit' name='delete' value='Delete'></td>";

對此：

$bookingtable .= "<td><a href='delete.php?roomid=" . $query->results()[$x]->roomid . "'>Delete</a></td>";

---

稍后，在delete.php頁面上，您可以使用$_GET superglobal訪問該特定行/ roomid，如下所示：

if(isset($_GET['roomid']) && (!empty($_GET['roomid']) || $_GET['roomid'] == 0)){
    $roomid = $_GET['roomid'];

    // perform delete operation
}