IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Conclusionedit
In summary, PHP version 5.3.9 is the lowest compatible version. There are currently no plans to refactor the code to work around these two bugs.
PHP 5.3.9 is nearly two years old, and three new major versions (5.4, 5.5, 5.6) have been released since then. It is highly advised to upgrade to a newer major version, as a large number of bugs and performance improvements have been made during that time.