In previous versions of PHP Storm, this was possible using the keyboard shortcut Ctrl + P.
But they changed it, now Ctrl + P opens the Print dialog.
My current version is 2016.3.2, and the new shortcut for it is Ctrl + Shift + Space .
You can see the shortcut in the view> Parameter Information

EDIT: This is only for Windows, on Linux the shortcut is Cmd + P.
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