[PDO] 2 phase commit

Hi internals, For the past few days I've been thinking about whether to make a suggestion to add two-phase commit functionality to pdo. I would like to hear everyone's opinions. About two-phase commit Regular transactions do not guarantee consistency across multiple DBs. For example, if you update DB1 and DB2 at the same time, only DB1 may be updated and the DB2 update may fail. When using two-phase commit, it is as if a common transaction has been started for multiple DBs, and their consistency can be guaranteed. Currently, pdo does not have such a feature as a method, but it is possible to use two-phase commit by executing a query. Think of it as adding such functionality as a method. Although I have only written about the advantages, two-phase commit also has disadvantages, such as the possibility that locks may not be released forever under certain conditions. Regards. Saki