PhpStorm does not recognize PHP functions

Question

PhpStorm does not recognize PHP built in functions like count(), urldecode(), str_replace() etc. So many annoying warnings shows on each file & auto_complete does not work.

PhpStorm v2020.3

I've tried Invalidate caches / restart, deleting PhpStorm cache folder and also disabled all 3rd party plugins. But this problem exists yet.

Any suggestion would be appreciated.

This looks like a namespace issue. What happens if you write \str_replace? — Barmar
– Barmar, Commented Apr 27, 2021 at 18:16
See stackoverflow.com/a/64071021/783119 -- fixed properly in 2021.1.1. For 2020.3 only manual deletion of the cache/index folders helps — LazyOne
– LazyOne, Commented Apr 27, 2021 at 18:16
@SeyedAmirKhalifehSoltani 1) So what did you do exactly? Step by step (in case something was missing). What paths were used. 2) Try 2021.1.1 version — LazyOne
– LazyOne, Commented Apr 27, 2021 at 19:19

Amir Khalife Soltani · Accepted Answer · 2021-04-29 20:33:24Z

0

I found the reason. PhpStorm Php interpreter did not set correctly. After set interpreter and delete manually "caches" & "index" folders and restart Phpstorm it fixed successfully!

C:\Users{my_user}\AppData\Local\JetBrains\PhpStorm2020.3\caches C:\Users{my_user}\AppData\Local\JetBrains\PhpStorm2020.3\index

answered Apr 29, 2021 at 20:33

Amir Khalife Soltani

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1 Comment

LazyOne Over a year ago

That's unexpected. Perhaps there is a bug .. as you do not need an actual PHP Interpreter for writing PHP code (unless it's a bug, of course). My guess* is that it may be related to the bad selection of stub files (by mistake or whatnot) on PHP Runtime tab (a tab next to PHP Interpreter selector) -- they define what PHP core functions/classes/etc are known to the IDE.

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