动态表单提交

Question

我的表单如下所示

 <form action="sub.php" method="post">
    <input type="text" name="username[]"><br>
    <input type="text" name="hometown[]"><br>
    <input type="text" name="country[]"><br>
    <input type="submit" value="submit">
</form>

sub.php

$username = $_POST["username"];
foreach($_POST['username'] AS $ID => $Value){

        echo "Checkbox with value ".$sValue." was checked!<br>";
    }

我只能得到一个输入字段，即用户名我们可以将所有3个输入都输入到sub.php中吗

Answer 1

如果我理解了这个问题

 <form action="sub.php" method="post">
    <input type="text" name="user[1][name]"><br>
    <input type="text" name="user[1][hometown]"><br>
    <input type="text" name="user[1][country]"><br>

    <input type="text" name="user[2][name]"><br>
    <input type="text" name="user[2][hometown]"><br>
    <input type="text" name="user[2][country]"><br>

    <input type="submit" value="submit">
</form>

PHP

$users = $_POST["user"];
foreach($users AS $ID => $info){
    echo "user $ID ({info['name']}) lives in {$info['hometown']}<br>";
}

echo "all usernames: ";
$all_ids = array_keys($users);
foreach($all_ids as $current_id) {
    echo $users[$current_id]['name']." ";
}

Answer 2

我不确定你的问题是什么，但是你的html有一些问题。它应该如下所示：

<form action="sub.php" method="post">
    <input type="text" name="username"><br>
    <input type="text" name="hometown"><br>
    <input type="text" name="country"><br>
    <input type="submit" value="submit>
</form>

我去掉了字段中的方括号，因为方括号通常意味着您希望php代码将其视为一个值数组，但您只有一个文本字段。

如果你想从表单中获得所有的输入，你应该使用：

foreach($_POST AS $ID => $Value){
    echo "Textbox with value ". $Value ." was used!<br>";
}

我将其更改为textbox，因为您的表单没有任何复选框

Answer 3

试试这个(不是很优雅，但应该会告诉你哪里出了问题)

$username = $_POST["username"];
foreach($_POST['username'] AS $ID => $Value){

        echo "Checkbox with value ".$Value." was checked!<br>";
    }
$hometown = $_POST["hometown"];
foreach($_POST['hometown'] AS $ht_ID => $ht_Value){

        echo "Checkbox with value ".$ht_Value." was checked!<br>";
    }
$username = $_POST["country"];
foreach($_POST['country'] AS $c_ID => $c_Value){

        echo "Checkbox with value ".$c_Value." was checked!<br>";
    }