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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 |
|---|---|
| 1202 | * Filters whether to show the admin bar. |
| 1203 | * |
| 1204 | * Returning false to this hook is the recommended way to hide the admin bar. |
| 1205 | * The user's display preference is used for logged in users. |
| 1206 | * |
| 1207 | * @since 3.1.0 |
| 1208 | * |
| 1209 | * @param bool $show_admin_bar Whether the admin bar should be shown. Default false. |
| 1210 | */ |
| 1211 | $show_admin_bar = apply_filters( 'show_admin_bar', $show_admin_bar ); |
| 1212 | |
| 1213 | return $show_admin_bar; |
| 1214 | } |
| 1215 | |
| 1216 | /** |
| 1217 | * Retrieve the admin bar display preference of a user. |
| 1218 | * |
| 1219 | * @since 3.1.0 |
| 1220 | * @access private |