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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 1901 | if ( 'edit_comments_per_page' == $option ) |
| 1902 | $per_page = apply_filters( 'comments_per_page', $per_page, isset($_REQUEST['comment_status']) ? $_REQUEST['comment_status'] : 'all' ); |
| 1903 | elseif ( 'categories_per_page' == $option ) |
| 1904 | $per_page = apply_filters( 'edit_categories_per_page', $per_page ); |
| 1905 | else |
| 1906 | $per_page = apply_filters( $option, $per_page ); |
| 1907 | |
| 1908 | // Back compat |
| 1909 | if ( isset( $screen->post_type ) ) |
| 1910 | $per_page = apply_filters( 'edit_posts_per_page', $per_page, $screen->post_type ); |
| 1911 | |
| 1912 | $return = "<div class='screen-options'>\n"; |
| 1913 | if ( !empty($per_page_label) ) |
| 1914 | $return .= "<input type='text' class='screen-per-page' name='wp_screen_options[value]' id='$option' maxlength='3' value='$per_page' /> <label for='$option'>$per_page_label</label>\n"; |
| 1915 | $return .= get_submit_button( __( 'Apply' ), 'button', 'screen-options-apply', false ); |
| 1916 | $return .= "<input type='hidden' name='wp_screen_options[option]' value='" . esc_attr($option) . "' />"; |
| 1917 | $return .= "</div>\n"; |
| 1918 | return $return; |
| 1919 | } |