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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 |
|---|---|
| 659 | * @global WP_Roles $wp_roles WordPress role management object. |
| 660 | */ |
| 661 | $GLOBALS['wp_roles'] = new WP_Roles(); |
| 662 | |
| 663 | /** |
| 664 | * Fires before the theme is loaded. |
| 665 | * |
| 666 | * @since 2.6.0 |
| 667 | */ |
| 668 | do_action( 'setup_theme' ); |
| 669 | |
| 670 | // Define the template related constants and globals. |
| 671 | wp_templating_constants(); |
| 672 | wp_set_template_globals(); |
| 673 | |
| 674 | // Load the default text localization domain. |
| 675 | load_default_textdomain(); |
| 676 | |
| 677 | $locale = get_locale(); |