How to change the default style of line comment in PHPStorm to at indentation level rather than at first column?
if ($condition) {
// At first column.
// At
You can change this in "Options -> Code Style -> PHP -> Wrapping and Braces" and check "Comment at first colum".
For "Ctrl+/" line commenting it is in "Settings->Code Style->PHP->Other->Code Commeting->Line comment at first column".
Looking at this answer, noticed that it needs a little updating. As of version 2017.3, this has been updated to:
Preferences > Editor > Code Style > PHP > (tab) Code Generation > Comment Code > (uncheck) Line comment at first column