- var_dump: documentation ( source)
- version_compare: documentation ( source)
<?php
var_dump(version_compare('1.0.0 alpha 1', '1.0.0 beta 1'));
var_dump(version_compare('1.0.0 dev 1', '1.0.0 beta 1'));
var_dump(version_compare('1.0.0 totalgarbage 1', '1.0.0 beta 1'));