Question

我有一个小日历页面，您可以点击特定月份并获取该月份的所有文章。有几个月没有文章，我想避免那个月用户点击的部分只发现它是空的。如何计算一年中每个月的所有文章以及后面的现有数据？

文章的数据库是这样的：

articles
id_articles -> **number**
title -> **varchar**
text -> **text**
date_created -> timestamp (CURRENT_TIMESTAMP - MM/DD/YYYY HH:MM:SS )

HTML code：

<nav id="arcive" class="clearfix">
        <ul>
            <li>
                <a role=slide rel=2012 class="current" >2012</a>
                <ul rel=2012 class="month">
                    <li>
                        <a href="#">December</a>
                        <a href="#">November</a>
                        <a href="#">October</a>
                        <a href="#">September</a>
                        <a href="#">August</a>
                        <a href="#">July</a>
                        <a href="#">Jun</a>
                        <a href="#">May</a>
                        <a href="#">April</a>
                        <a href="#">March</a>
                        <a href="#">February</a>
                        <a href="#">January</a>
                    </li>
                </ul>
            </li>
    </ul>
    </nav>

Answer 1

动态创建菜单的PHP将是：

$year = '2012'; // set this to whatever the year to be queried is

$sql = 'SELECT GROUP_CONCAT(MONTH(`date_created`)) `date_created`  '
     . 'FROM `articles` '
     . 'WHERE YEAR(`date_created`) = ' . (int) $year; // typecast for security

// run query to return list of numeric months with articles
$query = $this->db->query($sql);  
$result = $query->row();
$months = explode(',', $result->date_created);

$articles_per_month = array_count_values($months); // get count of articles per each month    

for ($i = 1; $i <= 12; $i++) // Loop Through 12-months
{
    $month_name = date('F', mktime(0, 0, 0, $i)); // Get the name of the month from the numeric month

    echo (in_array($i, $months)) // Check to see if articles for month, if so create link otherwise SPAN
        ? "<a href='/calendar/month/$i'>$month_name (" . $articles_per_month[$i] . ")</a>\n" // print link with number of articles
        : "<span>$month_name</span>\n";
}

这将创建菜单，如果一个月没有文章将在SPAN标签内打印月份名称，如果它确实有文章将打印月份作为链接以及该月的文章数量。< / p>

Codeigniter 2.1 - 每月对DB中的数据进行计数

1 个答案: