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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 |
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639 | * |
640 | * Use of this filter can result in unpredictable behavior, and is not recommended. |
641 | * |
642 | * @since 2.8.0 |
643 | * |
644 | * @param string[] $selects An array of fields to select for the terms query. |
645 | * @param array $args An array of term query arguments. |
646 | * @param string[] $taxonomies An array of taxonomy names. |
647 | */ |
648 | $fields = implode( ', ', apply_filters( 'get_terms_fields', $selects, $args, $taxonomies ) ); |
649 |
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650 | $join .= " INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id"; |
651 |
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652 | if ( ! empty( $this->query_vars['object_ids'] ) ) { |
653 | $join .= " INNER JOIN {$wpdb->term_relationships} AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id"; |
654 | } |
655 |
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656 | $where = implode( ' AND ', $this->sql_clauses['where'] ); |
657 |
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