Stop PhpStorm from aligning associative arrays
Preferences → Editor → Code Style → PHP → Other → Align key-value pairs
Settings (Preferences on Mac) | Editor | Code Style | PHP | Other | Array declaration style -> Align key-value pairs
Since PhpStorm 2017.x version it is now located at Settings (Preferences on Mac) | Editor | Code Style | PHP | Wrapping and Braces --> Array initializer | Align key-value pairs
In Phpstorm 2017.3 & later , This setting is located at File | Settings | Editor | Code Style | PHP | Wrapping and Braces | Array initializer | Align key-value pairs