Dropping PHP 5.3 support.
Revert "Another PHP 5.3 tweak."

This reverts commit 2452edde344f4bcd4087898b4ad63eb12333dcd5.
Revert "PHP 5.3"

This reverts commit a7ef8b509141c30af4ae377de3de729bb93137b5.
PHP 5.4 array syntax.