How does Zend subsystem start?

["Thomas Garvey" <tgarvey@xxxxxxxxxx>]

OK, this is weird.
 
I haven't been using Zend PHP for a while now and the Zend subsystem was not
running.  We experienced a power outage over the weekend and the iSeries
came back up.  So did the Zend subsystem.
I checked the QSTRUP system value, and the program it calls.  It doesn't
start the Zend subsystem.  I checked the Auto Start job entries for each
user based active subsystem (QBATCH, QINTER, QCMN, QUSRWRK, etc.)  None of
them have autostart job entries.
 
So, how did it start?
 
Tom Garvey