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我正在尝试使用复选框使此表单获取值 1 或 0，有点像布尔值，并在 mysql 上更新它，但我还没有找到方法。也许你可以帮忙。我将发布表单和接收它的代码。我确信可能存在循环冲突，但我尝试了一切，但无法使其正常工作。提前谢谢。

表格

<form action="esconde_cat.php" method="post">
    <table width="300px" align="center" width="140" border="1">
        <tr>
            <td></td>
            <td width="200">Categoria</td>
            <td width="100">Mostrar</td>
        </tr>
        <?php
            include "conecta.php";
            include "verifica.php";

            $sql = "SELECT * FROM categorias ORDER BY ordem";
            $res = mysql_query($sql) or die (mysql_error());
            while ($linha=mysql_fetch_array($res)) {
        ?>
        <tr>
            <td><input name="user[]" type="checkbox" value="true"/></td>
            <td><?=$linha['1']; ?></td>
            <td><?php if ($linha['3'] == TRUE){ echo 'SIM'; } else {echo 'NÃO'; } ?></td>
            </td>
        </tr> 

        <?php 
            }
        ?>
    </table>
    <br/>
    <table align="center">
        <tr>
            <td>
                <input type="submit" name="Delete" type="button" value="Alterar">
            </td>
        </tr>
    </table>
</form>

接收表单并更新 MYSQL 的代码

<?php

include "conecta.php";
include "verifica.php";

\\THIS PART WORKS, GETS IF THE CHECKBOX IS CHECKED AND RECORD IT ON DB

if(isset($_POST['user'])) {
    foreach ($_POST['user'] as $key => $read){
        $read =(@$_POST['user']=='0')? $_POST['user']:'1';
        echo $read;
        $sql = "UPDATE categorias SET mostrar='$read' WHERE ordem='$key'";
        $res = mysql_query($sql) or die ("Erro ao excluir") . mysql.error();
    }
}

\\ON THIS PART OF THE CODE THAT I CANT GET THE VARIABLE TO GET THE
\\VALUE FROM CHEBOXES THAT ARE UNCHECKED RECORDED TO DATABASE

if (!isset($_POST['user'])) {
    foreach ($_POST['user'] as $chave => $leia) {
        $leia =(@$_POST['user']=='1')? $_POST['user']:'0';
        echo $leia;
        $sql = "UPDATE categorias SET mostrar='$leia' WHERE ordem='$chave'";
        $res = mysql_query($sql) or die ("Erro ao excluir") . mysql.error();
    }
}

?>
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1 回答 1

4

如果未选中复选框，您将在$_POST变量中获得 NO 键。如果它被选中，键将被设置，值将是复选框的值。

假设“user []”的名称有效，例如：

<input type="checkbox" name="user[]" value="aa" />
<input type="checkbox" name="user[]" value="bb" checked="checked" />
<input type="checkbox" name="user[]" value="cc" checked="checked" />
<input type="checkbox" name="user[]" value="dd" />
<input type="checkbox" name="user[]" value="ee" checked="checked" />

你会期望$_POST是：

array(
    "user" => array(
        "1" => "bb"
        "2" => "cc"
        "4" => "ee"
    )
);
于 2012-01-31T21:17:45.357 回答