Turn off autocomplete in PhpStorm

This is more an answer to the linked "duplicate" question, but I can't answer that one. Hope this helps someone.

To disable HTML auto-completion, see Settings -> Editor -> General -> Smart Keys.

There is a section called XML/HTML where you can toggle auto-completion of HTML tags and attributes.

In my case I was looking to disable Auto close tags when typing '</' option.

Disable code completion?

See Settings/Preferences(depends on OS) - IDE Settings - Editor - Code Completion

There you should find an option Autopopup code completion in (ms)

If the check box is not selected, PhpStorm will not suggest code completion automatically.

See also the online help.