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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 |
|---|---|
| 1018 | if ( isset( $post_type_meta_caps[ $cap ] ) ) { |
| 1019 | $args = array_merge( array( $post_type_meta_caps[ $cap ], $user_id ), $args ); |
| 1020 | return call_user_func_array( 'map_meta_cap', $args ); |
| 1021 | } |
| 1022 | |
| 1023 | // If no meta caps match, return the original cap. |
| 1024 | $caps[] = $cap; |
| 1025 | } |
| 1026 | |
| 1027 | return apply_filters('map_meta_cap', $caps, $cap, $user_id, $args); |
| 1028 | } |
| 1029 | |
| 1030 | /** |
| 1031 | * Whether current user has capability or role. |
| 1032 | * |
| 1033 | * @since 2.0.0 |
| 1034 | * |
| 1035 | * @param string $capability Capability or role name. |
| 1036 | * @return bool |