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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 |
|---|---|
| 927 | * Filters whether to show the admin bar. |
| 928 | * |
| 929 | * Returning false to this hook is the recommended way to hide the admin bar. |
| 930 | * The user's display preference is used for logged in users. |
| 931 | * |
| 932 | * @since 3.1.0 |
| 933 | * |
| 934 | * @param bool $show_admin_bar Whether the admin bar should be shown. Default false. |
| 935 | */ |
| 936 | $show_admin_bar = apply_filters( 'show_admin_bar', $show_admin_bar ); |
| 937 | |
| 938 | return $show_admin_bar; |
| 939 | } |
| 940 | |
| 941 | /** |
| 942 | * Retrieve the admin bar display preference of a user. |
| 943 | * |
| 944 | * @since 3.1.0 |
| 945 | * @access private |