Question

我有这样的PHP代码：

    <?php
if(isset($_POST['submit']))
{
    if(!empty($_POST['vehicles']))
    {
        $vehicles=$_POST['vehicles'];
        $hostname='localhost';
        $username='root';
        $password='root';
        $dbname='pet';
        $connect=mysqli_connect($hostname,$username,$password,$dbname) or die("can't connect to server");
        $query="UPDATE information SET transportation='$vehicles'";
        $query=mysqli_query($connect,$query) or die("can't execute query");
        echo "inserted";
    }
    else
    {
    echo "error";
    }
}
else
{
    echo "choose your vehicle";
}
?>
<!DOCTYPE html>
<html>
<head>
<title> Select transportation you have</title>
</head>
<body><h2>Select transportation you have</h2>
<form action="#" method="POST">
<input type="checkbox" name="vehicles" value="bike"/>I have bike<br/>
<input type="checkbox" name="vehicles" value="car"/>I have car<br/>
<input type="checkbox" name="vehicles" value="motor"/>I have motor<br/>
<input type="submit" name="submit" value="submit"/>
</form>
</html>

当我选择多个选项时，我的数据库中只有一个值。例如我选择自行车和电机。数据库中只有电机

Answer 1

通过在名称末尾添加[]来将输入的名称更改为数组

<input type="checkbox" name="vehicles[]" value="bike"/>I have bike<br/>
<input type="checkbox" name="vehicles[]" value="car"/>I have car<br/>
<input type="checkbox" name="vehicles[]" value="motor"/>I have motor<br/>

然后在php中，您将能够使用数组语法访问它们，您只需使用implode制作逗号分隔的车辆列表。

$_POST['vehicles'][0]
$_POST['vehicles'][1]
$_POST['vehicles'][2]
//etc...

$vehicles = implode(",",$_POST['vheicles']);
$query="UPDATE information SET transportation='$vehicles'";
//$query would contain something like:
//UPDATE information SET transportation='bike,car'

当然，在将它们放入数据库之前对POST变量进行卫生处理。

Answer 2

您需要将html更改为：

<input type="checkbox" name="vehicles[]" value="bike"/>I have bike<br/>
<input type="checkbox" name="vehicles[]" value="car"/>I have car<br/>
<input type="checkbox" name="vehicles[]" value="motor"/>I have motor<br/>

将PHP更改为：

$vehicles=implode(',',$_POST['vehicles']);

使用复选框时覆盖的数据

2 个答案: