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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 |
|---|---|
| 621 | * on the type of list table in use. Possible values include: 'edit_comments_per_page', |
| 622 | * 'sites_network_per_page', 'site_themes_network_per_page', 'themes_network_per_page', |
| 623 | * 'users_network_per_page', 'edit_post_per_page', 'edit_page_per_page', |
| 624 | * 'edit_{$post_type}_per_page', etc. |
| 625 | * |
| 626 | * @since 2.9.0 |
| 627 | * |
| 628 | * @param int $per_page Number of items to be displayed. Default 20. |
| 629 | */ |
| 630 | return (int) apply_filters( $option, $per_page ); |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * Display the pagination. |
| 635 | * |
| 636 | * @since 3.1.0 |
| 637 | * @access protected |
| 638 | * |
| 639 | * @param string $which |