PhpStorm 2020.2 - PHP Built-in functions are not recognized

Question

I just installed PhpStorm 2020.2, and notice that all php base classes like Closure or mysqli are not been identified by the IDE.

Looking at the left where the PHP ba

Answer 1

It's a known issue. AFAIK there is still no solid idea on why it happens and why only some users are affected.

https://youtrack.jetbrains.com/issue/WI-54626 -- watch this ticket (star/vote/comment) to get notified on any progress.

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Current workaround:

1. Close IDE
2. Locate folder where PhpStorm 2020.2 stores indexes/caches on your computer (see below)
3. Delete that folder (as standard "Invalidate caches" does not help here)
4. Launch IDE

Typical locations for caches folder for different OS:

• Windows: %USERPROFILE%\AppData\Local\JetBrains\PhpStorm2020.2\caches
• Linux: ~/.cache/JetBrains/PhpStorm2020.2/caches
• macOS: ~/Library/Caches/JetBrains/PhpStorm2020.2/caches