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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 |
---|---|
712 |
|
713 | if ( ! isset( $show_admin_bar ) ) { |
714 | if ( ! is_user_logged_in() || 'wp-login.php' == $pagenow ) { |
715 | $show_admin_bar = false; |
716 | } else { |
717 | $show_admin_bar = _get_admin_bar_pref(); |
718 | } |
719 | } |
720 |
|
721 | $show_admin_bar = apply_filters( 'show_admin_bar', $show_admin_bar ); |
722 |
|
723 | return $show_admin_bar; |
724 | } |
725 |
|
726 | /** |
727 | * Retrieve the admin bar display preference of a user. |
728 | * |
729 | * @since 3.1.0 |
730 | * @access private |