wp-admin/includes/post.php:1107Returns meta data for the given post ID.
$post_idintarray[]...$0array
$meta_keystring
$meta_valuemixed
$meta_idstring
$post_idstring
function has_meta( $post_id ) { global $wpdb; return $wpdb->get_results( $wpdb->prepare( "SELECT meta_key, meta_value, meta_id, post_id FROM $wpdb->postmeta WHERE post_id = %d ORDER BY meta_key,meta_id", $post_id ), ARRAY_A );}Introduced in 1.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/post.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.