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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 |
|---|---|
| 1504 | } |
| 1505 | |
| 1506 | /** |
| 1507 | * Filters the array of stylesheets applied to the editor. |
| 1508 | * |
| 1509 | * @since 4.3.0 |
| 1510 | * |
| 1511 | * @param array $stylesheets Array of stylesheets to be applied to the editor. |
| 1512 | */ |
| 1513 | return apply_filters( 'editor_stylesheets', $stylesheets ); |
| 1514 | } |
| 1515 | |
| 1516 | /** |
| 1517 | * Registers theme support for a given feature. |
| 1518 | * |
| 1519 | * Must be called in the theme's functions.php file to work. |
| 1520 | * If attached to a hook, it must be {@see 'after_setup_theme'}. |
| 1521 | * The {@see 'init'} hook may be too late for some features. |
| 1522 | * |