php heredoc original document and nowdoc syntax-PHP Tutorial-php.cn

php heredoc original document and nowdoc syntax

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Release： 2016-08-08 09:20:42

Original

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<!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 => $todo) {
            echo <<<EOT
<li><input type="checkbox" name="tasks[$task_id]" value="done"> $todo
EOT;

            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");

    if (($_SERVER['REQUEST_METHOD'] == 'POST') && isset($_POST['tasks']) && is_array($_POST['tasks']) && !empty($_POST['tasks'])) {

        $q = 'UPDATE tasks SET date_completed=NOW() WHERE task_id IN (';
        foreach($_POST['tasks'] as $task_id => $v) {
            $q .= $task_id.', ';
        }
        $q = substr($q, 0, -2) . ')';

        $r = mysqli_query($db, $q);

        if(mysqli_affected_rows($db) == count($_POST['tasks'])) {
            echo '<p>选择的任务已经标记完成</p>';
        } else {
            echo '<p>选择的任务不能被标记为完成</p>';
        }
    }

    $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).'

'; // 这是原文档, heredoc格式 echo <<点击检查框, 标记为完成. (任务本身已经所有的子任务都将不会出现在这个列表)

EOT; ?>

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The above introduces the original php heredoc document and nowdoc syntax, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.