具有多个号码的电话簿 (PHP-PDO)

Question

I need to create a phone book with multiple phone numbers using PHP and MySQL.我需要使用 PHP 和 MySQL 创建具有多个电话号码的电话簿。

This is the phones table:这是电话表：

+----+---------+--------+
| ID | user_id | number |
+----+---------+--------+
|  1 |    1    | 111111 |
|  2 |    1    | 222222 |
|  3 |    1    | 333333 |
|  4 |    2    | 111111 |
+----+---------+--------+

And this is my code:这是我的代码：

<?php
    $conn = new PDO("mysql:host=127.0.0.1;dbname=phonebook", "root", "");

    if ($_SERVER['REQUEST_METHOD'] == "POST") {
        $newPhones = $_POST['phones'];

        foreach ($newPhones as $i => $newPhone) {
            //If the user modify a saved number, UPDATE.
            //else INSERT.
        }
    }

    $resp = $conn->query("SELECT number FROM `phones` WHERE `user_id`=1");
    while ($phone = $resp->fetch(PDO::FETCH_ASSOC)) $phones[] = $phone['number'];
?>

<html>
    <head>
        <script src="//ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
    </head>
    <body>
        <hr>
        <form action="" method="POST">
            <div class="phones">
                <?php if (!isset($phones)) $phones[] = ''; ?>
                <?php foreach ($phones as $i => $phone): ?>
                    <div class="phone">
                        <input type="text" name="phones[]" value="<?=$phone?>" /><a href="#" class="remove" style="<?php if ($i==0) echo "display:none;"; ?>">Remove</a>
                    </div>
                <?php endforeach; ?>
            </div>
            <a id="add" href="#">New</a>
            <input type="submit" name="submit" value="Save" />
        </form>
    </body>
</html>

<script type="text/javascript">
    $('#add').on('click',function(e){$('.phones').after($('.phones .phone:first').clone(true,true).children('.remove').show().end().find("input:text").val("").end());e.preventDefault();});
    $('.remove').on('click',function(e){$(this).parent().remove();e.preventDefault();});
</script>

My problem is when the user modifies or adds a phone numbers, how can i insert the new phone numbers entered by the user or update the phone numbers changed by the user in the HTML form?我的问题是当用户修改或添加电话号码时，我如何插入用户输入的新电话号码或更新用户在 HTML 表单中更改的电话号码？

Edit #1: I added a column to my table called "position" and I'm trying to use the position number of phone in the POST array to identify it.编辑 #1：我在我的表中添加了一个名为“位置”的列，我正在尝试使用POST数组中电话的位置编号来识别它。

This is my new table:这是我的新表：

+----+---------+--------+----------+
| ID | user_id | number | position |
+----+---------+--------+----------+
|  1 |    1    | 111111 |    0     |
|  2 |    1    | 222222 |    1     |
|  3 |    1    | 333333 |    2     |
|  4 |    2    | 111111 |    0     |
+----+---------+--------+----------+

And this my new PHP submit code:这是我新的 PHP 提交代码：

if ($_SERVER['REQUEST_METHOD'] == "POST") {
    $newPhones = $_POST['phones'];

    foreach ($newPhones as $i => $newPhone) {
        $resp = $conn->query("UPDATE `phones` SET `number`={$newPhone} WHERE `user_id`=1 AND `position`={$i} LIMIT 1");
    }
}

But now, the problem is, UPDATE only work if the row exist, but if not exist, how can i insert it?但是现在，问题是， UPDATE仅在行存在时才有效，但如果不存在，我该如何插入它？

I tried using the value returned by PDO::rowCount function (if it returns 0, insert it).我尝试使用PDO::rowCount函数返回的值（如果它返回 0，则插入它）。 But if the value is not modified, PDO::rowCount also return 0.但是如果值没有被修改， PDO::rowCount也会返回 0。

How can i solve this problem?我怎么解决这个问题？

Answer 1

My suggestion is as follows (however this works on the basis that you know the User ID - your question has a hard coded UserID):我的建议如下（但是，这是在您知道用户 ID 的基础上起作用的 - 您的问题具有硬编码的用户 ID）：

Start a transaction开始交易
Delete all your positions and users删除您的所有职位和用户
Insert all the new positions插入所有新位置

That way you won't need to worry about updating or keys - you simply reset that chunk of user data.这样您就无需担心更新或密钥 - 您只需重置该用户数据块。

Note that the transaction is important - you don't want to find you delete your entries and then your code fail and you lose what you had.请注意，交易很重要 - 您不想发现您删除了您的条目，然后您的代码失败并且您失去了您拥有的东西。

I hope that helps.我希望这有帮助。

具有多个号码的电话簿 (PHP-PDO)

问题描述

1 个解决方案

解决方案1
1 2016-04-18 10:33:11

具有多个号码的电话簿 (PHP-PDO)

问题描述

1 个解决方案

解决方案1 1 2016-04-18 10:33:11

解决方案1
1 2016-04-18 10:33:11