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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 |
|---|---|
| 329 | * |
| 330 | * Called by admin-header.php and by wp_head hook. Since it is called by wp_head on every page load, |
| 331 | * the function does not instantiate the WP_Scripts object unless script names are explicitly passed. |
| 332 | * Does make use of already instantiated $wp_scripts if present. |
| 333 | * Use provided wp_print_scripts hook to register/enqueue new scripts. |
| 334 | * |
| 335 | * @see WP_Scripts::print_scripts() |
| 336 | */ |
| 337 | function wp_print_scripts( $handles = false ) { |
| 338 | do_action( 'wp_print_scripts' ); |
| 339 | if ( '' === $handles ) // for wp_head |
| 340 | $handles = false; |
| 341 | |
| 342 | global $wp_scripts; |
| 343 | if ( !is_a($wp_scripts, 'WP_Scripts') ) { |
| 344 | if ( !$handles ) |
| 345 | return array(); // No need to instantiate if nothing's there. |
| 346 | else |
| 347 | $wp_scripts = new WP_Scripts(); |