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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.
| Line | Code |
|---|---|
| 195 | * |
| 196 | * Called by admin-header.php and by wp_head hook. Since it is called by wp_head on every page load, |
| 197 | * the function does not instantiate the WP_Scripts object unless script names are explicitly passed. |
| 198 | * Does make use of already instantiated $wp_scripts if present. |
| 199 | * Use provided wp_print_scripts hook to register/enqueue new scripts. |
| 200 | * |
| 201 | * @see WP_Scripts::print_scripts() |
| 202 | */ |
| 203 | function wp_print_scripts( $handles = false ) { |
| 204 | do_action( 'wp_print_scripts' ); |
| 205 | if ( '' === $handles ) // for wp_head |
| 206 | $handles = false; |
| 207 | |
| 208 | global $wp_scripts; |
| 209 | if ( !is_a($wp_scripts, 'WP_Scripts') ) { |
| 210 | if ( !$handles ) |
| 211 | return array(); // No need to instantiate if nothing's there. |
| 212 | else |
| 213 | $wp_scripts = new WP_Scripts(); |