我的这段代码带有一个循环,给我带来了一些麻烦和奇怪的结果。这个特定的帖子类型有一些自定义字段,我将它们放在一个数组中。一切都按预期工作,但如果一个字段没有值,它将从循环中的上一篇文章中获取值。
假设我在 Wordpress 中有这些帖子:
Post ID 10
custom_1 = 10
custom_2 = 20
custom_3 = 30
Post ID 20
custom_1 = 40
custom_2 = null
custom_3 = null
如果我运行我的循环,我会得到这些结果
Post ID 10
custom_1 = 10
custom_2 = 20
custom_3 = 30
Post ID 20
custom_1 = 40
custom_2 = 20 (instead of null)
custom_3 = 30 (instead of null)
这是该循环的简短版本:
$query = new WP_Query($query_arg);
if ($query->have_posts()) {
while ($query->have_posts()) {
$query->the_post();
$result[] = array(
"custom_1" => get_post_meta($post->ID, 'custom_1', true),
"custom_2" => get_post_meta($post->ID, 'custom_2', true),
"custom_3" => get_post_meta($post->ID, 'custom_3', true)
);
}
}
wp_reset_postdata();
我似乎无法围绕这个..尝试了几乎所有的东西,但没有任何接缝可以工作。
有谁知道这里发生了什么?
更新:通过将循环更改为此来修复它。
$query = new WP_Query($query_arg);
if ($query->have_posts()) {
while ($query->have_posts()) {
$query->the_post();
//set vars to "" which 'resets' the value with every new post in the loop
$custom_1 = "";
$custom_2 = "";
$custom_3 = "";
//set vars to the value of the custom fields
$custom_1 => get_post_meta($post->ID, 'custom_1', true);
$custom_2 => get_post_meta($post->ID, 'custom_2', true);
$custom_3 => get_post_meta($post->ID, 'custom_3', true);
$result[] = array(
"custom_1" => $custom_1,
"custom_2" => $custom_2,
"custom_3" => $custom_3
);
}
}
wp_reset_postdata();