PhpStorm 2017.2 Help


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Quick Definition Lookup makes it possible to view definition of a symbol (tag, class, method/function, field, etc.) in a pop-up window.


For markup languages, PhpStorm retrieves definitions of symbols from the specified DTD or schema. For details, see XML.

quick definition lookup xml

In the JavaScript or PHP context, PhpStorm retrieves the definition of a symbol from the source code and displays the name of the file where the symbol is defined:

web ide quick definition lookup

Viewing the definition of a symbol at caret

Do one of the following:

  • On the main menu, choose View | Quick Definition.
  • Press Ctrl+Shift+I.
  • Keeping the Ctrl key pressed, point with your mouse cursor to the symbol of interest, so that it turns to a hyperlink, with the definition of the symbol displayed in a tooltip. Clicking this hyperlink results in opening the respective definition page in the editor.

    Quick definition tooltip shows hyperlinks to the symbols involved.

    web ide quick definition tooltip

    When you move your mouse pointer within the tooltip, a pin button pin appears. If you pin the tooltip, documentation for the symbol at caret is displayed in the Documentation Tool Window.

Toolbar of the quick definition lookup

Use the icons on the toolbar of the pop-up window to navigate to the source code of the definition and view its usages.

IconKeyboard shortcutAction
arrowBack.png arrowForward.png Shift+Alt+Left
Navigate to the previous/next screen in the definition pop-up window after using hyperlinks in the definition.

On a macOS computer, you can also use the three-finger right-to-left and left-to-right swipe gestures.

editF4Open the source code of the definition for editing, and close the quick definition lookup window.
showDetailsCtrl+EnterOpen the source code of the definition, and preserve the quick definition lookup window opened.
Last modified: 28 November 2017

See Also