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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 |
|---|---|
| 590 | |
| 591 | /** |
| 592 | * Filters the returned array of roles for a user. |
| 593 | * |
| 594 | * @since 4.4.0 |
| 595 | * |
| 596 | * @param string[] $role_list An array of user roles. |
| 597 | * @param WP_User $user_object A WP_User object. |
| 598 | */ |
| 599 | return apply_filters( 'get_role_list', $role_list, $user_object ); |
| 600 | } |
| 601 | |
| 602 | } |
| 603 | |