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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 |
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540 | * @since 2.0.0 |
541 | */ |
542 | $GLOBALS['wp_roles'] = new WP_Roles(); |
543 |
|
544 | /** |
545 | * Fires before the theme is loaded. |
546 | * |
547 | * @since 2.6.0 |
548 | */ |
549 | do_action( 'setup_theme' ); |
550 |
|
551 | // Define the template related constants. |
552 | wp_templating_constants(); |
553 |
|
554 | // Load the default text localization domain. |
555 | load_default_textdomain(); |
556 |
|
557 | $locale = get_locale(); |
558 | $locale_file = WP_LANG_DIR . "/$locale.php"; |