ZF-9085: Zend_Date#getMonth() breaks when using PHP date format mode
Just upgraded to 1.10.0 and found this regression.
1) Set Zend_Date's date format to 'php' 2) Create a new date object 3) Call getMonth() on that date object
Get a date object returned with the month set to the same month as the original date.
Zend_Date_Exception is thrown.
I will add more details in the comments.