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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 |
|---|---|
| 393 | * Filter a user's capabilities depending on specific context and/or privilege. |
| 394 | * |
| 395 | * @since 2.8.0 |
| 396 | * |
| 397 | * @param array $caps Returns the user's actual capabilities. |
| 398 | * @param string $cap Capability name. |
| 399 | * @param int $user_id The user ID. |
| 400 | * @param array $args Adds the context to the cap. Typically the object ID. |
| 401 | */ |
| 402 | return apply_filters( 'map_meta_cap', $caps, $cap, $user_id, $args ); |
| 403 | } |
| 404 | |
| 405 | /** |
| 406 | * Whether the current user has a specific capability. |
| 407 | * |
| 408 | * While checking against particular roles in place of a capability is supported |
| 409 | * in part, this practice is discouraged as it may produce unreliable results. |
| 410 | * |
| 411 | * Note: Will always return true if the current user is a super admin, unless specifically denied. |