Question

I have a PHP script with the following lines:

require_once 'meekrodb.2.1.class.php';
DB::$user = 'usr';
DB::$password = 'pwd';
DB::$dbName = 'db';
DB::$encoding = 'utf8';

$results = DB::queryFirstField("
    CALL getSequence('time_id', %i); // ***** Stored procedure call *****
", TENANT_ID);

DB::insert('timeentry', array(
    'tenant_id' => TENANT_ID,
    'time_id' => $results,
    'timestart' => DB::sqleval("now()"),
    'assig_id' => $assig_id
));

I am getting the following error:

QUERY: INSERT INTO timeentry (tenant_id, time_id, timestart, assig_id) VALUES (1, ’42’, now(), ‘1’)

ERROR: Commands out of sync; you can’t run this command now

If I replace the call to the stored procedure with a SELECT statement, everything works fine.

$results = DB::queryFirstField("
    SELECT 45; // ***** SELECT statement *****
");

DB::insert('timeentry', array(
    'tenant_id' => TENANT_ID,
    'time_id' => $results,
    'timestart' => DB::sqleval("now()"),
    'assig_id' => $assig_id
));

I have not analyzed the internals of the MeekroDB Library (http://www.meekro.com).

I tried wrapping each statement in a transaction but I get the same error when COMMIT is executed right after the call to the stored procedure.

Any help is greatly appreciated.

Answer 1

Calls to stored procedures in MySQL produce multiple result sets. That is, a stored proc might have more than one SELECT, so the client has to iterate through several result sets to finish processing the CALL.

See examples in the answer to this question: Retrieving Multiple Result sets with stored procedure in php/mysqli

Until all results from the CALL are finished, it isn’t considered closed, and MySQL does not permit you to run another query before the current query is completely finished.

I don’t know the MeekroDB library well, but glancing at the online docs I don’t see any way to iterate through multiple result sets. So there may not be any way to call stored procedures safely. I suggest you contact the author for specific support: http://www.meekro.com/help.php.