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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 |
|---|---|
| 657 | * on the type of list table in use. Possible values include: 'edit_comments_per_page', |
| 658 | * 'sites_network_per_page', 'site_themes_network_per_page', 'themes_network_per_page', |
| 659 | * 'users_network_per_page', 'edit_post_per_page', 'edit_page_per_page', |
| 660 | * 'edit_{$post_type}_per_page', etc. |
| 661 | * |
| 662 | * @since 2.9.0 |
| 663 | * |
| 664 | * @param int $per_page Number of items to be displayed. Default 20. |
| 665 | */ |
| 666 | return (int) apply_filters( $option, $per_page ); |
| 667 | } |
| 668 | |
| 669 | /** |
| 670 | * Display the pagination. |
| 671 | * |
| 672 | * @since 3.1.0 |
| 673 | * @access protected |
| 674 | * |
| 675 | * @param string $which |