PhpStorm text size

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

https://i.stack.imgur.com/9xmYw.png

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

https://i.stack.imgur.com/uE8du.png

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

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

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

https://i.stack.imgur.com/vNjei.png

30 Second Demo Here

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

The pre-defined schemes are not editable. To change colors and fonts settings in such a scheme, create its copy. So to change font size select any scheme of your choice. Save the "scheme" as a copy with a name like "scheme 2". Now the default font size will be editable.

In MacOS, you should navigate to the PhpStorm -> Preferences -> Editor -> General screen and check/uncheck the "Change font size (Zoom) with Command + Mouse Wheel" checkbox. I unchecked because I don't like it but maybe you do.

Moreover, you can use the finder field in the top left corner of the same PhpStorm -> Preferences dialog. Type the word "size" in this field and you will see a couple of items on the right hand side of the dialog. There are the Editor Actions -> Decrease Font Size and Editor Actions -> Increase Font Size options.

Right click each of them and choose "Add Keyboard Shortcut". Finally, press the Ctrl and numerical plus in case of Increase and Ctrl and numerical minus in case of Decrease and press OK (if you have numerical part of your keyboard).

In PhpStorm 2020.2.1 go to :

Settings -> Editor-> Font

https://i.stack.imgur.com/J8Nml.png

That's it

Switching beetween Editors and zooming text during presentations or so could be complicated. If you used to do it like in notepad++ than maybe this helps if you use win:

^NumpadAdd::
    send,^{WheelUp}
return

the complete script you could find here: https://gist.github.com/sl5net/7170280#file-gistfile1-txt