我有三个数组获得不同的帖子类型，然后将它们合并以在 Wordpress 管理员中进行下拉。我正在尝试插入空值/中断以使下拉列表更易于阅读。
这是数组和array_merge：
// creating an array of pages
$featpages = array();
$pages = get_pages();
$pages[""] = "";
foreach ($pages as $page) {
$featpages[ $page->post_title ] = $page->ID;
}
// creating an array of posts
$postargs = array('numberposts' => 0);
$featposts = array();
$posts = get_posts($postargs);
$posts[""] = "";
foreach ($posts as $post) {
$featposts[ $post->post_title ] = $post->ID;
}
// creating an array of activities
$actargs = array('post_type' => 'activity', 'numberposts' => 0);
$featacts = array();
$acts = get_posts($actargs);
$acts[""] = "";
foreach ($acts as $act) {
$featacts[ $act->post_title ] = $act->ID;
}
// creating a combined array of pages and tours
$links = array_merge((array)$featpages, (array)$featacts, (array)$featposts);
我希望[""] = "";for each 会在每组之间添加一个空行，但它只适用于一个 - 我猜是因为它们看起来与 array_merge 相同？