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php递归,静态变量,匿名函数使用

程序员文章站 2022-05-26 17:48:49
...

Current To-Do List';

        foreach($parent as $task_id => $todo) {
            echo "
  • $todo"; if (isset($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 "
  • "; } echo ''; } $db = mysqli_connect('192.168.31.172' ,'root', 'root', 'phpadvanced'); mysqli_query($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] = $task; } //echo '
    '.print_r($tasks,1).'
    '; make_list($tasks[0]); //把包含*任务的数组发送给它, 最*的parent_id是0 ?>
     ["name" => "Name", "grade" => xx.x];
    
    $students = [
        256 => ['name' => 'Jon', 'grade' => '98.5'],
        2 => ['name' => 'Vance', 'grade' => '85.1'],
        9 => ['name' => 'Stephen', 'grade' => '94.0'],
        364 => ['name' => 'Steve', 'grade' => '85.1'],
        68 => ['name' => 'Rob', 'grade' => '74.6'],
    ];
    
    function name_sort($x, $y) {
        static $count = 1;
        echo "

    Iteration $count: {$x['name']} vs. {$y['name']}

    \n"; $count ++; return strcasecmp($x['name'], $y['name']); } function grade_sort($x, $y) { static $count = 1; echo "

    Iteration $count: {$x['grade']} vs. {$y['grade']}

    \n"; $count++; return $x['grade']
     ["name" => "Name", "grade" => xx.x];
    
    $students = [
        256 => ['name' => 'Jon', 'grade' => '98.5'],
        2 => ['name' => 'Vance', 'grade' => '85.1'],
        9 => ['name' => 'Stephen', 'grade' => '94.0'],
        364 => ['name' => 'Steve', 'grade' => '85.1'],
        68 => ['name' => 'Rob', 'grade' => '74.6'],
    ];
    
    echo print_r($students, 1);
    uasort($students, function($x, $y){
        return strcasecmp($x['name'], $y['name']);
    }); //保持键并使用自定义排序
    echo print_r($students, 1);
    uasort($students, function($x, $y){
        return $x['grade'] 

    以上就介绍了php递归,静态变量,匿名函数使用,包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。