Parse error/syntax error with PHP versions under 5.3.20

If I run openlayers with a PHP version under my tested 5.3.20, I get the php error:

PHP version 5.2.17, 5.3.15

Parse error: syntax error, unexpected T_FUNCTION in /openlayers/openlayers.module on line 596
Drush command terminated abnormally due to an unrecoverable error.                                                                        [error]
Error: syntax error, unexpected T_FUNCTION in /openlayers/openlayers.module,
line 596

With php version 5.3.20 and 5.4.10 all works.

Proposed solution: Change the required php version to 5.3.20 in the .info file.