Description:
------------
Incorrect Period Designator for minute => M 

Should be => I

---
From manual page: http://www.php.net/dateinterval.construct%23Parameters
---




Expected result:
----------------
Period Designator 	Description
Y 	years
M 	months
D 	days
W 	weeks. These get converted into days, so can not be combined with D.
H 	hours
I 	minutes
S 	seconds

Actual result:
--------------
Period Designator 	Description
Y 	years
M 	months
D 	days
W 	weeks. These get converted into days, so can not be combined with D.
H 	hours
M 	minutes
S 	seconds