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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 |
|---|---|
| 850 | function print_late_styles() { |
| 851 | global $wp_styles, $concatenate_scripts; |
| 852 | |
| 853 | if ( !is_a($wp_styles, 'WP_Styles') ) |
| 854 | return; |
| 855 | |
| 856 | $wp_styles->do_concat = $concatenate_scripts; |
| 857 | $wp_styles->do_footer_items(); |
| 858 | |
| 859 | if ( apply_filters('print_late_styles', true) ) |
| 860 | _print_styles(); |
| 861 | |
| 862 | $wp_styles->reset(); |
| 863 | return $wp_styles->done; |
| 864 | } |
| 865 | |
| 866 | /** |
| 867 | * @internal use |
| 868 | */ |