I know this question is very popular
Asked here PHP: strtotime is returning false for a future date? and here How can I work with dates before 1900 in PHP?
AFAIK, you are limited to these two solutions.
You should update to 64-bit system if you can afford it, and if it solves a problem then that's better.
Edit: Just had to check:
http://php.net/manual/en/function.runkit-function-redefine.php
You could probably try and redefine strtotime()
to work with dates prior to 1901.