PhpStorm v2020.3.1 doesn't recognize PHP core functions like count [duplicate]

Question

I have core PHP functions in my project but below of the PhpStorm it says Undefined function strtolower, count and so on.

In the left side External Libraries > PHP Runtime all the directories are collapsed and empty. I have cleared caches by File > Invalidate Caches / Restart... but no luck.

How to fix it?

Delete your IDE caches while IDE is closed. See stackoverflow.com/a/64071021/783119 for details (adjust the path for 2020.3 version). P.S. If you have installed PhpStorm via JetBrains Toolbox App .. then the path might be a bit different (check idea.log for that, it lists it at the start of the session) — LazyOne
– LazyOne, Commented Jan 18, 2021 at 14:59

devStaky · Accepted Answer · 2021-01-18 14:55:12Z

1

Try to delete .idea folder. I had this problem 1 week ago.

answered Jan 18, 2021 at 14:55

devStaky

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2 Comments

kodfire Over a year ago

I had deleted. No luck :(

devStaky Over a year ago

Delete this folder : %USERPROFILE%\AppData\Local\JetBrains\PhpStormxxx\caches

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