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 often hit this error and it's always when I run a stored procedure that I have been debugging in phpmyadmin or SQL Workbench (I am working in php connecting with mysqli).

The error results from the fact that the debugging involves inserting SELECT statements at strategic points in the code to tell me the state of variables, etc. Running a stored procedure that produces multiple results sets in these client environments is fine, but it produces the "Commands out of sync" error when called from php. The solution is always to comment-out or remove the debugging selects so the procedure has only one result set.