Add support for PHP 5.3

Remove short array declaration syntax
Add PHP version 5.3 to Travis
Change missed array literals to 5.3 array format
Fix missing variable error in test run
Merge pull request #3 from karlhorky/master

Add support for PHP 5.3
Merge remote-tracking branch 'origin/develop'

* origin/develop:
  Fix missing variable error in test run
  Change missed array literals to 5.3 array format
  Add PHP version 5.3 to Travis
  Add support for PHP 5.3