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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 |
|---|---|
| 721 | global $wp_scripts, $concatenate_scripts; |
| 722 | |
| 723 | if ( !is_a($wp_scripts, 'WP_Scripts') ) |
| 724 | return array(); // No need to run if not instantiated. |
| 725 | |
| 726 | script_concat_settings(); |
| 727 | $wp_scripts->do_concat = $concatenate_scripts; |
| 728 | $wp_scripts->do_footer_items(); |
| 729 | |
| 730 | if ( apply_filters('print_footer_scripts', true) ) |
| 731 | _print_scripts(); |
| 732 | |
| 733 | $wp_scripts->reset(); |
| 734 | return $wp_scripts->done; |
| 735 | } |
| 736 | |
| 737 | /** |
| 738 | * @internal use |
| 739 | */ |