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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 |
|---|---|
| 1373 | |
| 1374 | /** |
| 1375 | * Fires immediately after the given user's cache is cleaned. |
| 1376 | * |
| 1377 | * @since 4.4.0 |
| 1378 | * |
| 1379 | * @param int $user_id User ID. |
| 1380 | * @param WP_User $user User object. |
| 1381 | */ |
| 1382 | do_action( 'clean_user_cache', $user->ID, $user ); |
| 1383 | } |
| 1384 | |
| 1385 | /** |
| 1386 | * Determines whether the given username exists. |
| 1387 | * |
| 1388 | * For more information on this and similar theme functions, check out |
| 1389 | * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ |
| 1390 | * Conditional Tags} article in the Theme Developer Handbook. |
| 1391 | * |