Wordpress：获取自定义类型的所有帖子
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Wordpress: get all posts of a custom type
提问by Michael
I have this strange issue. I want to fetch all posts that are of a custom type, here's my snippet.
我有这个奇怪的问题。我想获取所有自定义类型的帖子，这是我的片段。
$query = new WP_Query(array(
'post_type' => 'custom',
'post_status' => 'publish'
));
while ($query->have_posts()) {
$query->the_post();
$post_id = get_the_ID();
echo $post_id;
echo "<br>";
}
wp_reset_query();
This only gets me 6 of them, while I have more than 50 records matching that criteria in the database. Can anyone tell me where I have gone wrong?
这只会让我得到 6 个，而我在数据库中有超过 50 条符合该条件的记录。谁能告诉我我哪里出错了？
Many thanks!
非常感谢！
回答by jono
'posts_per_page' => -1,
'posts_per_page' => -1,
Add this to the WP_QUERY array of arguments and it should return all of the posts of this custom post type.
将此添加到 WP_QUERY 参数数组，它应该返回此自定义帖子类型的所有帖子。
回答by Andrea
This get all posts of a custom type using get_posts:
这使用以下方法获取自定义类型的所有帖子get_posts：
$posts = get_posts([
'post_type' => 'custom',
'post_status' => 'publish',
'numberposts' => -1
// 'order' => 'ASC'
]);
回答by mustra
You should never use:
你永远不应该使用：
'posts_per_page' => -1
It slow and not effective, if you are talking about SQL Query speeds. So it is much better to use some large integer.
如果您在谈论 SQL 查询速度，它会很慢且无效。所以最好使用一些大整数。
This is a performance hazard. What if we have 100,000 posts? This could crash the site. If you are writing a widget, for example, and just want to grab all of a custom post type, determine a reasonable upper limit for your situation.
这是性能风险。如果我们有 100,000 个帖子怎么办？这可能会导致网站崩溃。例如，如果您正在编写一个小部件，并且只想获取所有自定义帖子类型，请为您的情况确定一个合理的上限。
More details here: https://10up.github.io/Engineering-Best-Practices/php/#performance
更多细节在这里：https: //10up.github.io/Engineering-Best-Practices/php/#performance
回答by Bobadevv
The number of posts to return are set under settings > reading
返回的帖子数量在设置>阅读下设置
You can pass the number of posts for your query to return using.
您可以传递查询的帖子数以返回使用。
'posts_per_page' => 'number of posts'
回答by joseacat
It is advisable to use an integer instead of '-1' For example:
建议使用整数而不是 '-1' 例如：
'posts_per_page' => 999999,
