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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 |
|---|---|
| 666 | global $wp_scripts, $concatenate_scripts; |
| 667 | |
| 668 | if ( !is_a($wp_scripts, 'WP_Scripts') ) |
| 669 | return array(); // No need to run if not instantiated. |
| 670 | |
| 671 | script_concat_settings(); |
| 672 | $wp_scripts->do_concat = $concatenate_scripts; |
| 673 | $wp_scripts->do_footer_items(); |
| 674 | |
| 675 | if ( apply_filters('print_footer_scripts', true) ) |
| 676 | _print_scripts(); |
| 677 | |
| 678 | $wp_scripts->reset(); |
| 679 | return $wp_scripts->done; |
| 680 | } |
| 681 | |
| 682 | /** |
| 683 | * @internal use |
| 684 | */ |