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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 |
|---|---|
| 304 | add_theme_support( 'widgets' ); |
| 305 | |
| 306 | /** |
| 307 | * Fires once a sidebar has been registered. |
| 308 | * |
| 309 | * @since 3.0.0 |
| 310 | * |
| 311 | * @param array $sidebar Parsed arguments for the registered sidebar. |
| 312 | */ |
| 313 | do_action( 'register_sidebar', $sidebar ); |
| 314 | |
| 315 | return $sidebar['id']; |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * Removes a sidebar from the list. |
| 320 | * |
| 321 | * @since 2.2.0 |
| 322 | * |