PHP strtotime for June returns July

Question

I\'m stumped as to why the following PHP strtotime function returns \'07\' as the month number, rather than \'06\' when $monthToGet = \'June\':

$monthToGet =         


        

Answer 1

Fixed with :

$monthToGet = '1 '. $_GET['mon'];

But I still don't get why, since "m" is a valid date format