posts_join │ filter-hook │ WP 1.5.0

Filters the JOIN clause of the query.

Usage

add_filter( 'posts_join', 'wp_kama_posts_join_filter' );

/**
 * Function for `posts_join` filter-hook.
 * 
 * @param string $join The JOIN clause of the query.
 *
 * @return string
 */
function wp_kama_posts_join_filter( $join ){

	// filter...
	return $join;
}

$join(string)

The JOIN clause of the query.

Changelog

Where the hook is called

$join = apply_filters_ref_array( 'posts_join', array( $join, &$this ) );

Where the hook is used in WordPress