Coding Standards
In the PHP community, as well as every other development community, there has been a long-standing tradition of establishing 'Coding Standards' that specify how developers should format their code. So, the PHP Framework Interop(ability) Group came up with PSR-1 and PSR-2 that deal with the issue specifically.
Fabien Potencier / Sensio Labs has released the PHP Coding Standards Fixer tool which fixes most issues in your code. It helps you follow the PHP coding standards as defined in the PSR-1 and PSR-2 documents.