按 ACF 自定义字段结果的 Wordpress php 分组呈现给具有帖子副本的许多组答案

【问题标题】：Wordpress php grouping by ACF custom field result renders to many groups with copies of posts按 ACF 自定义字段结果的 Wordpress php 分组呈现给具有帖子副本的许多组
【发布时间】：2019-01-27 08:55:33
【问题描述】：

所以，我基本上是在尝试将每年按组排序的帖子存档。我正在使用 ACF 日期选择器 并使用 getProdYear(); 函数从每个日期中提取年份。然后我尝试关注this 示例为每年创建一个组。

PHP：

function getProdYear() {
    $dateBeg = get_field('prod_date_beg');
    $yB = substr($dateBeg, 0, 4);
    $mB = substr($dateBeg, 4, 2);
    $dB = substr($dateBeg, 6, 2);
    $timeB = strtotime("{$dB}-{$mB}-{$yB}");

    global $prod_year;
    $prod_year = date('Y' , $timeB );

}   

$args = array(
    'category_name' => 'produktion',
    'numberposts' => -1,
    'order' => 'DSC',
    'orderby' => 'meta_value',
    'meta_key' => 'prod_date_beg',
);

$posts = get_posts($args); 
$group_posts = array();

foreach($posts as $post) :
    setup_postdata( $post ); 

    getProdYear(); //run function to get year only from 'prod-date-beg' in $prod_year 

    if( !isset($group_posts[ $prod_year ]) )
    {
        $group_posts[ $prod_year ] = array();
    }

    $group_posts[ $prod_year ][] = $post; //create group

    //var_dump($group_posts);

    foreach ($group_posts as $year_group => $year_posts) {
        echo '<strong>'. $prod_year . '</strong>';
        echo '<ul>';
        foreach ($year_posts as $post) {
            echo '<li>'. get_the_title($post->ID) .'</li>';
        }
        echo '</ul>';
    } 
endforeach; 
wp_reset_postdata();

我现在得到的结果是：

【问题讨论】：

标签： php wordpress foreach advanced-custom-fields posts

【解决方案1】：

好的，我修好了。我在一个循环内循环，通过在启动 foreach ($group_by_year as $year_name => $year_posts) 之前关闭 foreach($posts as $post) 它正确分组所有内容。我还将echo '<strong>'. $prod_year . '</strong>'; 更改为echo '<strong>'. $year_name . '</strong>';，因为每个组的第一个重复相同的名称。

这是我的工作 PHP：

    function getProdYear() {
    $dateBeg = get_field('prod_date_beg');
    $yB = substr($dateBeg, 0, 4);
    $mB = substr($dateBeg, 4, 2);
    $dB = substr($dateBeg, 6, 2);
    $timeB = strtotime("{$dB}-{$mB}-{$yB}");

    global $prod_year;
    $prod_year = date('Y' , $timeB );

}   

$args = array(
    'category_name' => 'produktion',
    'numberposts' => -1,
    'order' => 'DSC',
    'orderby' => 'meta_value',
    'meta_key' => 'prod_date_beg',
);

$posts = get_posts($args); 
$group_posts = array();

//loop through posts
foreach($posts as $post) {
    setup_postdata( $post ); 

    //run function to get year only from 'prod-date-beg' in $prod_year 
    getProdYear(); 

    //$add to so
    if( !isset($group_by_year[ $prod_year ]) )
    {
        $group_by_year[ $prod_year ] = array();
    }

    $group_by_year[ $prod_year ][] = $post; //create group

    }

    //loop through group_by_year    
    foreach ($group_by_year as $year_name => $year_posts) {
        echo '<strong>'. $year_name . '</strong>';
        echo '<ul>';
        foreach ($year_posts as $post) {
            echo '<li>'. get_the_title($post->ID) .'</li>';
        }
        echo '</ul>';
    }
wp_reset_postdata();

【讨论】：