SQL Server Query Slow from PHP, but FAST from SQL Mgt Studio - WHY?

Question

I have a fast running query (sub 1 sec) when I execute the query in SQL Server Mgt Studio, but when I run the exact same query in PHP (on the same db instace) using FreeTDS

Answer 1

what settings are on, usually ARITHABORT is the culprit, it is ON in SSMS but you might be connecting with it off

Run this in SSMS while you are running your query and see what the first column is for the session that is connected from PHP

select arithabort,* from sys.dm_exec_sessions
where session_id > 50