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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 |
|---|---|
| 1 | <?php |
| 2 | |
| 3 | function wp_print_styles( $handles = false ) { |
| 4 | do_action( 'wp_print_styles' ); |
| 5 | if ( '' === $handles ) // for wp_head |
| 6 | $handles = false; |
| 7 | |
| 8 | global $wp_styles; |
| 9 | if ( !is_a($wp_styles, 'WP_Styles') ) { |
| 10 | if ( !$handles ) |
| 11 | return array(); // No need to instantiate if nothing's there. |
| 12 | else |
| 13 | $wp_styles = new WP_Styles(); |