Commands out of sync; you can't run this command now

Question

I am trying to execute my PHP code, which calls two MySQL queries via mysqli, and get the error \"Commands out of sync; you can\'t run this command now\".

Here is th

Answer 1

I ran into this error using Doctrine DBAL QueryBuilder.

I created a query with QueryBuilder that uses column subselects, also created with QueryBuilder. The subselects were only created via $queryBuilder->getSQL() and not executed. The error happened on creating the second subselect. By provisionally executing each subselect with $queryBuilder->execute() before using $queryBuilder->getSQL(), everything worked. It is as if the connection $queryBuilder->connection remains in an invalid state for creating a new SQL before executing the currently prepared SQL, despite the new QueryBuilder instance on each subselect.

My solution was to write the subselects without QueryBuilder.