CodeIgniter：在视图中使用foreach的问题

Question

我有一个模型和控制器，可以从数据库中获取一些数据并返回以下数组

Array
(
    [2010] => Array
        (
            [year] => 2010
            [months] => Array
                (
                    [0] => stdClass Object
                        (
                            [sales] => 2
                            [month] => Apr
                        )

                    [1] => stdClass Object
                        (
                            [sales] => 1
                            [month] => Nov
                        )

                )

        )

    [2011] => Array
        (
            [year] => 2011
            [months] => Array
                (
                    [0] => stdClass Object
                        (
                            [sales] => 1
                            [month] => Nov
                        )

                )

        )

)

它确切地显示了应该显示的内容，但是密钥的名称不同，因此我不知道如何使用foreach循环浏览这些年份。 数组是我还不擅长的东西:(

如果您需要了解以下信息，则为控制器：

    function analytics()
    {
        $this->load->model('admin_model'); 
        $analytics = $this->admin_model->Analytics();
        foreach ($analytics as $a):
            $data[$a->year]['year'] = $a->year;
            $data[$a->year]['months'] = $this->admin_model->AnalyticsMonth($a->year);
        endforeach;

        echo"<pre style='text-align:left;'>";
        print_r($data);
        echo"</pre>";

        $data['main_content'] = 'analytics';
        $this->load->view('template_admin', $data);
    }//end of function categories()

Answer 1

将年份数组放在数组的单独索引中，以便将其隔离

foreach ($analytics as $a) {
    $data['dates'][$a->year]['year'] = $a->year;
    $data['dates'][$a->year]['months'] = $this->admin_model->AnalyticsMonth($a->year);
}

然后，您可以循环浏览，而不必担心其他数据

<?php foreach( $dates as $year => $year_content  ): ?>
<h2><?php echo $year ?></h2>

<?php foreach( $year_content['months'] as $months ): ?>
<h3><?php echo $months->month ?> - <?php echo $months->sales ?></h3>
<?php endforeach; ?>

<?php endforeach; ?>