#48065 [Com]: mysqli can not have two called procedure queries active at once

ID: 48065 Comment by: schwern at pobox dot com Reported By: schwern at pobox dot com Status: Open Bug Type: MySQLi related Operating System: OS X PHP Version: 5.2CVS-2009-04-23 (snap) New Comment: For reference, here's the MySQL 5.0 docs on "Commands out of sync". http://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html Previous Comments: ------------------------------------------------------------------------ [2009-04-23 23:10:26] schwern at pobox dot com Description: ------------ mysqli does not like having two query results active at the same time if a stored procedure was queried. MySQL balks with "Commands out of sync; you can't run this command now". The equivalent SELECT does not have this problem, nor does Perl's DBD::mysql for comparison. Work arounds appear to be explicitly free'ing the result before calling the next one, but that is not easily possible through the Drupal DB API, for example. Also I might want to return a query result from a function and have it live on out of my function's control. And its a general violation of OO to have the two result objects interfere with each other. Reproduce code: --------------- http://rafb.net/p/XnP3AN31.html (Writes to the test database and user) The script creates a table with a few rows and a stored procedure doing a "select *" on that table. It then illustrates that two concurrent calls to that procedure cause an error while two "SELECT *" queries do not. Replicated on OS X with their stock PHP 5.2.6 and a fresh php5.2-200904232230 snapshot with --with-mysqli. Using a local mysql server compiled from MacPorts. mysql Ver 14.12 Distrib 5.0.77, for apple-darwin9.6.0 (i386) using readline 6.0 Expected result: ---------------- Doing call get_stuff Done Doing select * from stuff Done Actual result: -------------- Doing call get_stuff Second query FAILED: Commands out of sync; you can't run this command now Done Doing select * from stuff Done ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=48065&edit=1