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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 |
|---|---|
| 625 | * @global WP_Roles $wp_roles WordPress role management object. |
| 626 | */ |
| 627 | $GLOBALS['wp_roles'] = new WP_Roles(); |
| 628 | |
| 629 | /** |
| 630 | * Fires before the theme is loaded. |
| 631 | * |
| 632 | * @since 2.6.0 |
| 633 | */ |
| 634 | do_action( 'setup_theme' ); |
| 635 | |
| 636 | // Define the template related constants and globals. |
| 637 | wp_templating_constants(); |
| 638 | wp_set_template_globals(); |
| 639 | |
| 640 | // Load the default text localization domain. |
| 641 | load_default_textdomain(); |
| 642 | |
| 643 | $locale = get_locale(); |