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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 |
|---|---|
| 623 | global $wp_scripts, $concatenate_scripts; |
| 624 | |
| 625 | if ( !is_a($wp_scripts, 'WP_Scripts') ) |
| 626 | return array(); // No need to run if not instantiated. |
| 627 | |
| 628 | script_concat_settings(); |
| 629 | $wp_scripts->do_concat = $concatenate_scripts; |
| 630 | $wp_scripts->do_footer_items(); |
| 631 | |
| 632 | if ( apply_filters('print_footer_scripts', true) ) |
| 633 | _print_scripts(); |
| 634 | |
| 635 | $wp_scripts->reset(); |
| 636 | return $wp_scripts->done; |
| 637 | } |
| 638 | |
| 639 | /** |
| 640 | * @internal use |
| 641 | */ |