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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 768 | * @since 2.8.0 |
| 769 | * |
| 770 | * @see wp_print_scripts() |
| 771 | */ |
| 772 | function print_head_scripts() { |
| 773 | global $wp_scripts, $concatenate_scripts; |
| 774 | |
| 775 | if ( ! did_action('wp_print_scripts') ) { |
| 776 | /** This action is documented in wp-includes/functions.wp-scripts.php */ |
| 777 | do_action( 'wp_print_scripts' ); |
| 778 | } |
| 779 | |
| 780 | if ( !is_a($wp_scripts, 'WP_Scripts') ) |
| 781 | $wp_scripts = new WP_Scripts(); |
| 782 | |
| 783 | script_concat_settings(); |
| 784 | $wp_scripts->do_concat = $concatenate_scripts; |
| 785 | $wp_scripts->do_head_items(); |
| 786 | |
| Line | Code |
| 865 | * |
| 866 | * Postpones the scripts that were queued for the footer. |
| 867 | * wp_print_footer_scripts() is called in the footer to print these scripts. |
| 868 | * |
| 869 | * @since 2.8.0 |
| 870 | */ |
| 871 | function wp_print_head_scripts() { |
| 872 | if ( ! did_action('wp_print_scripts') ) { |
| 873 | /** This action is documented in wp-includes/functions.wp-scripts.php */ |
| 874 | do_action( 'wp_print_scripts' ); |
| 875 | } |
| 876 | |
| 877 | global $wp_scripts; |
| 878 | |
| 879 | if ( !is_a($wp_scripts, 'WP_Scripts') ) |
| 880 | return array(); // no need to run if nothing is queued |
| 881 | |
| 882 | return print_head_scripts(); |
| 883 | } |