MYSQL incorrect DATETIME format

Question

I have an app with Doctrine 1 and I generate update_datetime fields for objects via new Zend_Date->getIso(). It worked just fine for years, but

Answer 1

Ok with the help from StackOverflow community I finally solved it. The problem was with STRICT_TRANS_TABLES in sql_mode variable. But changing it in /etc/my.cnf seemed not enough, so I had to run mysql -uroot and type the following:

set sql_mode=NO_ENGINE_SUBSTITUTION; set global sql_mode=NO_ENGINE_SUBSTITUTION;

Thus removing STRICT_TRANS_TABLES

------this answer works