jQuery UI将可排序列表保存到PHP数组

Question

我正在尝试将带有jQuery UI(可排序)的表的顺序保存到PHP数组中.

我已经非常简化了它,但这是它的基本思想.我有一个嵌入了可排序列表的表.该表是通过PHP生成的,foreach涉及另一个文件(config.php)中包含的多维数组.

config.php:

<?php
$config     = array(
    "mno" => array('item 5'),
    "abc" => array('item 1'),
    "ghi" => array('item 3'),
    "pqr" => array('item 6'),
    "jkl" => array('item 4'),
    "vwx" => array('item 8'),
    "def" => array('item 2'),
    "stu" => array('item 7'),
);
?>

table(index.html):

<table cellpadding="2" cellspacing="0" align="center" id="mytable">
    <tbody>

<?php
    $i = 0;
    include 'config.php';
    foreach($config AS $name => $value){
        $item = $value[0];
        echo '
        <tr id="'.$name.'-'.$i++.'">
            <td>'.$item.'</td>
        </tr>';
    }
?>

    </tbody>
</table>

scripts(index.html):

<!-- Add jQuery library -->
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
<!-- Add jQuery UI library -->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
<script type="text/javascript">
    $(document).ready(function() {
        var fixHelper = function(e, ui) {
            ui.children().each(function() {
                $(this).width($(this).width());
            });
            return ui;
        };

        $("#mytable tbody").sortable({
            helper: fixHelper,
            opacity: 0.5,
            scroll: false,
            update: function () {
                var data = $('#mytable tbody').sortable('serialize');
                $.post("edit.php", {'neworder': data});
            }
        }).disableSelection();
    });
</script>

排序工作正常但我不知道如何将neworder value($_POST['neworder'])保存到数组中config.php.

我想我必须使用PHP函数uasort()(或uksort(),uksort())与组合file_put_contents保存在新的秩序config.php.

所以像这样:

<?php
if($_SERVER['REQUEST_METHOD'] == 'POST' && isset($_POST['neworder'])) {
    /* 
    Here file_put_contents in config.php the new order. So:
    $config     = array(
        "mno" => array('item 5'),
        "abc" => array('item 1'),
        "ghi" => array('item 3'),
        "pqr" => array('item 6'),
        "jkl" => array('item 4'),
        "vwx" => array('item 8'),
        "def" => array('item 2'),
        "stu" => array('item 7'),
    );

    Becomes:
    $config     = array(
        "abc" => array('item 1'),
        "def" => array('item 2'),
        "ghi" => array('item 3'),
        "jkl" => array('item 4'),
        "mno" => array('item 5'),
        "pqr" => array('item 6'),
        "stu" => array('item 7'),
        "vwx" => array('item 8'),
    );

    After this is send by Jquery UI:
    neworder:abc[]=1&def[]=6&ghi[]=2&jkl[]=4&mno[]=0&pqr[]=3&stu[]=7&vwx[]=5

    I've tried this:
        $filename = 'config.php';

        $lines = file( $filename , FILE_IGNORE_NEW_LINES );
        $linenumber = 2;
        foreach( $_POST['neworder'] AS $name => $val){
            $phost = $val[0];

            $lines[$linenumber] = ' "'.$name.'" => array(\'' . $phost . '\'),';
            $linenumber++;
        }

        file_put_contents( $filename , implode( "\n", $lines ) );

    But the '$val' is not send with Jquery only the order.

    */  
}
?>

Answer 1

您将需要使用带有闭包的 usort（在 php 5.3+ 中可用）来按照您需要的顺序获取键。

$newOrder = $_POST["neworder"];
$config_keys = array_keys($config);
usort($config_keys, function($a, $b) use($newOrder) {
      return array_search($a, $newOrder) - array_search($b, $newOrder);
});

然后你可以将 rewrite $config 更改为新顺序

$newConfig = array();

foreach($config_keys as $key){
    $newConfig[$key] = $config[$key];
}
$config = $newConfig;
unset($newConfig);

从这里，您可以使用对您的用例最有意义的任何方法来保留 $config 。我建议不要使用它来创建 php 文件，更好的方法可能是使用

file_put_contents($cacheFile, serialize($config));

然后检索

$config = unserialize(file_get_contents($cacheFile));