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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 |
|---|---|
| 1313 | |
| 1314 | /** |
| 1315 | * Filter the terms query arguments. |
| 1316 | * |
| 1317 | * @since 3.1.0 |
| 1318 | * |
| 1319 | * @param array $args An array of arguments. |
| 1320 | * @param string|array $taxonomies A taxonomy or array of taxonomies. |
| 1321 | */ |
| 1322 | $args = apply_filters( 'get_terms_args', $args, $taxonomies ); |
| 1323 | |
| 1324 | extract($args, EXTR_SKIP); |
| 1325 | |
| 1326 | if ( $child_of ) { |
| 1327 | $hierarchy = _get_term_hierarchy( reset( $taxonomies ) ); |
| 1328 | if ( ! isset( $hierarchy[ $child_of ] ) ) |
| 1329 | return $empty_array; |
| 1330 | } |
| 1331 | |