Source View: posts_search

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

Line Code
2422
2423           /**
2424            * Filter the search SQL that is used in the WHERE clause of WP_Query.
2425            *
2426            * @since 3.0.0
2427            *
2428            * @param string   $search Search SQL for WHERE clause.
2429            * @param WP_Query $this   The current WP_Query object.
2430            */
2431           $search = apply_filters_ref_array( 'posts_search', array( $search, &$this ) );
2432
2433           // Taxonomies
2434           if ( !$this->is_singular ) {
2435                $this->parse_tax_query( $q );
2436
2437                $clauses = $this->tax_query->get_sql( $wpdb->posts, 'ID' );
2438
2439                $join .= $clauses['join'];
2440                $where .= $clauses['where'];