Question

我有一个用foreach构造生成的表，在每个<tr>里面都有一个删除按钮。我想删除包含按钮的行（按ID），但我所做的只是删除保存的最后一行（最后一个ID）而不是所需的。

这是我的HTML代码的一部分：

<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="POST">
    <table class="Pizarra" id="pizarra" cellspacing="0px";>
        <tr class="trThDos">  
            <th></th>
            <th></th>
            <th></th>
            <th></th>
            <th></th>
        </tr>
        <tbody>
            <!-- Comienza PHP -->
            <?php 

            $i = 0;
            foreach ($resultados as $fila)
            {
            ?>

            <tr>

                <input type="hidden" name="id" value="<?php echo $fila['ID']; ?>" />
                <td class="tdTurno"><?php echo '#' . ++$i ?></td>
                <td class="tdImg">
                <?php echo $fila ['value']; 

                switch ($fila['value'])
                {
                    case "0":
                        echo "<img src='./img/consulta-56-2.png'";
                    break;

                    case "1":
                        echo "<img src='./img/shot-56-2.png'";
                    break;

                    case "2":
                        echo "<img src='./img/ta-56-2.png'";
                    break;

                    case "3":
                        echo "<img src='./img/cert-56-2.png'";
                    break;

                    default:
                        echo "Hubo un error en la selección";
                    break;

                } ?>
                </td>
                <td>
                <?php echo $fila ['nombre']; ?>
                </td>
                <td class="tdHr">
                <?php echo $fila ['hora']; ?>
                </td>
                <td>
                <input type="submit" class="btnBorrar" name="btnBorrar" value="X">
                </td>
            </tr>
            <?php } ?> 
        </tbody>
    </table>
</form>

PHP代码：

<?php
// ----------- CONEXIÓN ------------------
try {
    $conexion = new PDO('mysql:host=localhost;dbname=farmacia', 'Emm', ' ');
    $conexion->exec("set names utf8");
    //echo "Conexión OK <br />";

}catch(PDOException $e){
    echo "Error: " . $e->getMessage();
    die();
}
// ----------- TERMINA CONEXIÓN -----------------

if(isset($_POST['btnBorrar'])){
    $id = $_POST['id'];

    $statement = $conexion->prepare("DELETE FROM eventos WHERE ID = $id");
    $statement->execute();
    //fetchAll' es clave para que invoque (llame) TODOS los elementos
    $resultados = $statement->fetchAll();

    header("Location:index.php");

    $conexion = null;
}

?>

Answer 1

不使用POST方法，而是使用GET并为删除按钮添加类似

的链接

yourscript.php?delete={ID}

并处理您的ID

$deleteId = (int)$_GET["delete"];

和

if(isset($deleteId)){
   //do delete stuff
   $statement = $conexion->prepare("DELETE FROM eventos WHERE ID = $deleteId");
   $statement->execute();
   //fetchAll' es clave para que invoque (llame) TODOS los elementos
   $resultados = $statement->fetchAll();

}

用此替换隐藏的输入字段;

<a href="yourscript.php?delete=<?php echo $fila['ID']; ?>">Delete me</>

Answer 2

尝试使用以下代码..

<强> HTML

<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="POST">
        <table class="Pizarra" id="pizarra" cellspacing="0px";>
            <tr class="trThDos">  
            <th></th>
            <th></th>
            <th></th>
            <th></th>
            <th></th>
            </tr>
            <tbody>
            <!-- Comienza PHP -->
            <?php 

            $i = 0;
            foreach ($resultados as $fila) {
            ?>
                <tr id="row_id_<?php echo $fila['ID']; ?>">
                <td class="tdTurno"><?php echo '#' . ++$i ?></td>
                <td class="tdImg"><?php echo $fila ['value']; 

                        switch ($fila['value']){

                        case "0":
                        echo "<img src='./img/consulta-56-2.png'";
                        break;

                        case "1":
                        echo "<img src='./img/shot-56-2.png'";
                        break;

                        case "2":
                        echo "<img src='./img/ta-56-2.png'";
                        break;

                        case "3":
                        echo "<img src='./img/cert-56-2.png'";
                        break;

                        default:
                        echo "Hubo un error en la selección";
                        break;

                        } ?></td>
                <td><?php echo $fila ['nombre']; ?></td>
                <td class="tdHr"><?php echo $fila ['hora']; ?></td>
                <td><input type="button" class="btnBorrar" name="btnBorrar" value="X" onClick="delete_row(<?php echo $fila['ID']; ?>)"></td>

                </tr>

            <?php } ?> 
            </tbody>
        </table>
        </form>

<强>的JavaScript

function delete_row(delete_id) {
         $.ajax({
            type: "POST",
            url: 'delete_row.php',
            data: 'delete_id='+delete_id,
            success: function(data_respones){
                    $("#row_id_"+delete_id).remove();
            }
         });

}

<强> delete_row.php

<?php
    // ----------- CONEXIÓN ------------------
    try {
        $conexion = new PDO('mysql:host=localhost;dbname=farmacia', 'Emm', ' ');
        $conexion->exec("set names utf8");
    //echo "Conexión OK <br />";

    }
    catch(PDOException $e){
        echo "Error: " . $e->getMessage();
        die();
   }


    if(isset($_POST["delete_id"])){
       //do delete stuff
       $statement = $conexion->prepare("DELETE FROM eventos WHERE ID = $id");
       $statement->execute();
    }

?>

Answer 3

使用GET方法代替POST

在HTML中，而不是使用提交按钮，使用链接，如下所示

<a href="your\php\file\path\delete.php?id=<?php echo $fila['ID']; ?>">X</a>

在delete.php中，请执行以下操作

<?php 
   if(isset($_GET['id'])){
     //get the id into php variable like below
     $id = $_GET['id'];

     //sql query to delete with id variable in where clause

   }
?>

希望这项工作!!!

如何用里面的按钮删除表行

3 个答案: