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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
612 | * |
613 | * - `wp_post_revisions_to_keep` |
614 | * - `wp_page_revisions_to_keep` |
615 | * |
616 | * @since 5.8.0 |
617 | * |
618 | * @param int $num Number of revisions to store. |
619 | * @param WP_Post $post Post object. |
620 | */ |
621 | $num = apply_filters( "wp_{$post->post_type}_revisions_to_keep", $num, $post ); |
622 |
|
623 | return (int) $num; |
624 | } |
625 |
|
626 | /** |
627 | * Sets up the post object for preview based on the post autosave. |
628 | * |
629 | * @since 2.7.0 |
630 | * @access private |