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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 |
|---|---|
| 732 | |
| 733 | if ( ! isset( $show_admin_bar ) ) { |
| 734 | if ( ! is_user_logged_in() || 'wp-login.php' == $pagenow ) { |
| 735 | $show_admin_bar = false; |
| 736 | } else { |
| 737 | $show_admin_bar = _get_admin_bar_pref(); |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | $show_admin_bar = apply_filters( 'show_admin_bar', $show_admin_bar ); |
| 742 | |
| 743 | return $show_admin_bar; |
| 744 | } |
| 745 | |
| 746 | /** |
| 747 | * Retrieve the admin bar display preference of a user. |
| 748 | * |
| 749 | * @since 3.1.0 |
| 750 | * @access private |