Generic Function to add left join for meta items
static public addMetaLeftJoin ( $from_type, $to_type, array &$already_link_tables2, $nullornott, $joinparams = [] ) : Meta | ||
$from_type | reference item type ID | |
$to_type | item type to add | |
$already_link_tables2 | array | array of tables already joined |
$nullornott | Used LEFT JOIN (null generation) or INNER JOIN for strict join | |
return | Meta | Left join string |