PHP / MySQL：PHPページの行を削除した後のエラー（フィルター処理済み）

このケースは、質問 PHP / MySQL：データが正常に更新された後にエラーを表示します

これは、dashboard_engineer2.phpで、from、to、team変数が投稿された場​​合、コードがデータベースのデータを表示するためです。

delete.phpからdashboard_engineer2.phpへのリダイレクトがgetメソッドであり、以前に投稿されたデータが欠落しています

delete.phpを変更します このようなコード

<?php
        $report_id = $_POST['report_id'];
        $from = $_POST['from'];
        $to = $_POST['to'];
        $team = $_POST['team'];

        $sql = "DELETE FROM ot_report WHERE report_id=:report_id";
        $query = $conn->prepare($sql);
        $query->execute(array(':report_id' => $report_id));

        // so that the data previously posted is taken
        // when redirecting to the dashboard_engineer2.php page 
        // even though it is a GET method

        header("Location: dashboard_engineer2.php?from={$from}&to={$to}&team={$team}");
?>

dashboard_engineer2.phpにわずかな変更がありました このようになる

<?php

    // change the initial conditions to be like this
    // $_REQUEST will get data if there is data in POST or GET

    if(isset($_REQUEST["from"], $_REQUEST["to"], $_REQUEST["team"])){

        $from = $_REQUEST['from'];
        $to   = $_REQUEST['to'];
        $team = $_REQUEST['team'];

        $result = '';
        $query = "SELECT * FROM ot_report LEFT JOIN ot_users ON ot_report.badgeid = ot_users.badgeid WHERE ot_users.team_id = '".$team."' AND report_date BETWEEN '".$from."' AND '".$to."' ORDER BY ot_report.report_date DESC";

        $sql = $conn->prepare($query, array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL));
        $sql -> execute();

        if($sql->rowCount() > 0){

        echo'

        <table class = "table-bordered" width = "100%">
        <thead>
        <tr>
        <th width = "10%"><input type="checkbox" id="checkAl"> All</th>
        <th width = "3%">id</th>
        <th width = "15%">Date</th>
        <th width = "30%">Task Name</th>
        <th width = "10%">Status</th>
        <th colspan = "2" width = "7%">Action</th>
        </tr>
        </thead>
        <tbody>';

            $i=0;

            while($row = $sql->fetch(PDO::FETCH_ASSOC)){

            $datereport = $row['report_date'];
            $datereport2 = strtotime($datereport);
            $report_date = date('d M Y', $datereport2);

            $report_id = $row["report_id"];

            echo'<tr>';
                echo '<td><input type="checkbox" id="checkItem" name="check[]" value='.$row['report_id'].'></td>';
                echo '<td>'.$report_id.'</td>';
                echo '<td>'.$report_date.'</td>';
                echo '<td>'.$row["task_name"].'</td>';
                echo '<td align="center"><strong>'.$row["report_status"].'</strong></td>';
                echo '<td align="center">';
                echo '<form action = "view_task/view_task.php" method = "post">';
                echo '<input type = "hidden" name = "report_id" value = "'.$report_id.'">';
                echo '<button type = "submit" class="btn-primary">View</button>';
                echo '</form>';

                echo "<form action = 'delete.php' method = 'post' onClick=\"return confirm('Do you want to remove team?')\">";
                echo '<input type = "hidden" name = "from" value = "'.$from.'">';
                echo '<input type = "hidden" name = "to" value = "'.$to.'">';
                echo '<input type = "hidden" name = "team" value = "'.$team.'">';
                echo '<input type = "hidden" name = "report_id" value = "'.$report_id.'">';
                echo '<button type = "submit" class="btn-danger">Delete</button>';
                echo '</form>';

                echo '</td>';
            echo '</tr>';
            $i++;

            }
            echo '<tr>';
                echo '<td><p align="center"><button type="submit" class="btn-danger btn-sm" name="save">DELETE</button></p></td>';
            echo '</tr>';
            echo '</form>';

        }
        else
        {
            echo '
            <table class = "table-bordered" width = "100%">
            <thead>
            <tr>
            <th width = "5%">id</th>
            <th width = "12%">Date</th>
            <th width = "23%">Task Name</th>
            <th width = "10%">Status</th>
            <th width = "7%">Action</th>
            </tr>
            <tr>
            <td colspan="5">No report found</td>
            </tr>';
        }
        echo '</body></table></div></div>';

        } 

?>