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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 |
|---|---|
| 1544 | * @since 6.0.0 |
| 1545 | * |
| 1546 | * @param array $defaults An array of arguments passed to get_terms(). |
| 1547 | * @param int|string $term The term to check. Accepts term ID, slug, or name. |
| 1548 | * @param string $taxonomy The taxonomy name to use. An empty string indicates |
| 1549 | * the search is against all taxonomies. |
| 1550 | * @param int|null $parent ID of parent term under which to confine the exists search. |
| 1551 | * Null indicates the search is unconfined. |
| 1552 | */ |
| 1553 | $defaults = apply_filters( 'term_exists_default_query_args', $defaults, $term, $taxonomy, $parent ); |
| 1554 | |
| 1555 | if ( is_int( $term ) ) { |
| 1556 | if ( 0 === $term ) { |
| 1557 | return 0; |
| 1558 | } |
| 1559 | $args = wp_parse_args( array( 'include' => array( $term ) ), $defaults ); |
| 1560 | $terms = get_terms( $args ); |
| 1561 | } else { |
| 1562 | $term = trim( wp_unslash( $term ) ); |