Get WP Posts Meta Query
User
_highlight yes/no get wp post which has no or empty
Assistant
To retrieve WordPress posts that have an empty or non-existent `_highlight` meta key, you can use the following query with `WP_Query`. Here’s an example of how to do this:
$args = array(
'post_type' => 'post', // Change to your custom post type if needed
'meta_query' => array(
array(
'key' => '_highlight',
'compare' => 'NOT EXISTS', // This will get posts where the meta key does not exist
),
array(
'key' => '_highlight',
'value' => '', // This will get posts where the meta key is empty
'compare' => '=', // Optional: to also include empty values
),
),
'posts_per_page' => -1, // Retrieve all posts, adjust as needed
);
$query = new WP_Query($args);
if ($query->have_posts()) {
while ($query->have_posts()) {
$query->the_post();
// Your code to handle the post
echo '<h2>' . get_the_title() . '</h2>';
}
wp_reset_postdata();
} else {
echo 'No posts found.';
}### Explanation:
– **post_type**: Specify the post type to query. Default is `post`.
– **meta_query**: An array that defines multiple meta queries:
– The first array checks if the `_highlight` meta key does not exist.
– The second array checks if the `_highlight` meta key exists but is empty.
– **posts_per_page**: Set to `-1` to retrieve all matching posts.
### Note:
You can adjust the `post_type` and other parameters in the `$args` array according to your specific needs.