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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 |
---|---|
732 | * |
733 | * @since 2.0.0 |
734 | * @since 3.7.0 Added the user object. |
735 | * |
736 | * @param array $allcaps An array of all the user's capabilities. |
737 | * @param array $caps Actual capabilities for meta capability. |
738 | * @param array $args Optional parameters passed to has_cap(), typically object ID. |
739 | * @param WP_User $user The user object. |
740 | */ |
741 | $capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args, $this ); |
742 |
|
743 | // Everyone is allowed to exist. |
744 | $capabilities['exist'] = true; |
745 |
|
746 | // Must have ALL requested caps. |
747 | foreach ( (array) $caps as $cap ) { |
748 | if ( empty( $capabilities[ $cap ] ) ) |
749 | return false; |
750 | } |