PHP_Compat is required when the PHP version below 4.3.3 (not above or equal).
Merge pull request #256 from bantu/fix-php-compat-description

PHP_Compat is required when the PHP version below 4.3.3 (not above or eq...

* bantu/fix-php-compat-description:
  PHP_Compat is required when the PHP version below 4.3.3 (not above or equal).