递归读取任务列表代码
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Current To-Do List</title>
</head>
<body>
<?php
function make_list($parent) {
global $tasks;
echo '<ol>';
foreach($parent as $task_id => $todo) {
echo "<li>$todo";
if (isset($tasks[$task_id])) { // 如果当前id有子任务则递归创建菜单
make_list($tasks[$task_id]);
}
echo "</li>";
}
echo '</ol>';
}
$db = mysqli_connect('192.168.31.172' ,'root', 'root', 'phpadvanced');
mysqli_query($db, "set names utf8");
$q = 'SELECT task_id, parent_id, task FROM tasks WHERE date_completed="0000-00-00 00:00:00" ORDER BY parent_id, date_added ASC';
$r = mysqli_query($db, $q);
$tasks = array();
while (list($task_id, $parent_id, $task) = mysqli_fetch_array($r, MYSQLI_NUM)) {
$tasks[$parent_id][$task_id] = $task;
}
//echo '<pre class="brush:php;toolbar:false;">'.print_r($tasks,1).'
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