Sqlanywhere and zend php Faulting application

I am getting this error every so often, but I can't pin it down to anything in particular

We are using sqlanywhere database ext otherwise everything else is stock standard with zend.

I have disabled all the other database extensions as we don't need them

Faulting application name: php-cgi.exe, version: 5.4.37.0, time stamp: 0x54db63b1
Faulting module name: php5.dll, version: 5.4.37.0, time stamp: 0x54db63af
Exception code: 0xc0000005
Fault offset: 0x002aa891
Faulting process id: 0x7cc
Faulting application start time: 0x01d0ad5c3da5b769
Faulting application path: C:\zend\ZendServer\bin\php-cgi.exe
Faulting module path: C:\zend\ZendServer\bin\php5.dll
Report Id: 050115f0-1b89-11e5-93f2-001372fd3885
Faulting package full name: 
Faulting package-relative application ID:

I upgraded to zend server version 8 and php-5.6.0_sqlanywhere_nts.dll and I am still getting the error.

I have posted on the zend forums and they suggest that I should check with sybase/sap, I have posted on the sybase forums and got no response.

We do not have a current sybase contract for support.

Is there anyway I can tell if it is the sybase ext or the zend php that is a fault here, so we can go down the relevant path to get this resolved.