Question

基本的东西，但我不明白为什么它不起作用我想在数据库中保存一个复选框的状态，输入布尔值，如果选中则为1否则0这里是我的代码：

<input type="checkbox" name="stok"  value="1"
  <?php if(isset($_POST['stok'])) echo "checked='checked'"; ?>
/>
<?php
    if (isset($_POST['stok']) && !empty($_POST['stok']) && $_POST['stok'] === 'on')               
        $stok = 1;  
    else 
        $stok = 0;      

    mysql_query ("update tab set etat_vendu=$stok where id=$big");
?>  

//this is my var $stok=$row['stok'];

Answer 1

这将有效：

if(isset($_POST['stok'])){
    //$stok is checked and value = 1
    $stok = $_POST['stok'];
}
else{
    //$stok is nog checked and value=0
    $stok=0;
}

Answer 2

尝试在if。

中将$_POST['stok'] === 'on'更改为$_POST['stok'] === '1'

Answer 3

你的if语句可以更短，更简短，因为你已经传递了一个值：）

if (isset($_POST['stok']))
    $stok = $_POST['stok']; // equals 1 since that's the given value
else
    $stok = 0;

编辑：不要忘记查看UPDATE()声明：

mysql_query("UPDATE tab SET etat_vendu='".$stok."' WHERE id='".$big."'");

必要时添加数据卫生。

Answer 4

我想我现在知道你想要什么

$result = mysqli_query($con,"SELECT etat_vendu FROM tab WHERE id=".$big);
    while($row = mysqli_fetch_array($result))
    {
        $stok = $row['etat_vendu'];
    }

和你的复选框

    <form action='index.php' method='post'>
<?php
    if($stok != 0){
    echo "<input type='checkbox' name='stok'  value='1' checked='checked'/>";
    }
    else{
    echo "<input type='checkbox' name='stok'  value='1'/>";
    }
?>
    <input type='submit' name='submit' value='submit'>
    </form>
<?php
            if(isset($_POST['stok'])){
                //$stok is checkend and value = 1
                $stok = $_POST['stok'];
            }
            else{
                $stok=0;
            }
?>

Answer 5

就这么简单

if($fetch['proved'] === '1') {
   $p1 = 1;
   $p0 = 0;
} else {
   $p1 = 0;
   $p0 = 1;
}

<select name="proved">
  <option value="<?php echo $p0 ?>"><?php echo $p0 ?></option>
  <option selected value="<?php echo $p1 ?>"><?php echo $p1 ?></option>
</select>

Answer 6

$stock = $_POST['stok'] ?? 0; // Null coalescing Since PHP7

保存简单的复选框boolean php

6 个答案: