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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 |
|---|---|
| 722 | function print_late_styles() { |
| 723 | global $wp_styles, $concatenate_scripts; |
| 724 | |
| 725 | if ( !is_a($wp_styles, 'WP_Styles') ) |
| 726 | return; |
| 727 | |
| 728 | $wp_styles->do_concat = $concatenate_scripts; |
| 729 | $wp_styles->do_footer_items(); |
| 730 | |
| 731 | if ( apply_filters('print_late_styles', true) ) |
| 732 | _print_styles(); |
| 733 | |
| 734 | $wp_styles->reset(); |
| 735 | return $wp_styles->done; |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * @internal use |
| 740 | */ |