PhpStorm text size

Enable CTRL+Mouse Wheel: Settings -> Editor -> Change font size (Zoom) with Ctrl+Mouse Wheel (check).

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Specify exact font size: Settings -> Editor -> Colors & Fonts -> Font.

Also you can use View → Enter Presentation Mode.

Default font size for this mode is 24.

You can change it here: Settings → Appearance → Presentation Mode → Font size

I am able to change my PHP Storm (version 8.0.3 or later) Fonts by

1. Go to File and then click Settings.
2. Form Left Side Menu, Select Editor --> General Tab
3. Check this box under Mouse section Change font size (zoom) with Ctrl_Mouse Wheel (see below pic).

30 Second Demo Here

in new version in this address file > setting > Editor > general check this item Change font size (Zoom) with Ctrl+Mouse Wheel