PHP built in functions/classes etc. are not recognized

I was looking for it for half an hour and of course, right after posting this question, I found it :)

"Settings/Languages & Frameworks/PHP/PHP Runtime/Sync Extensions with Interpreter."

Hello, I have this same problem.

Phpstorm is complaining that is_numeric is an unknown/undefined function.

I have gone to "Settings/Languages & Frameworks/PHP/PHP Runtime/Sync Extensions with Interpreter." but this doesn't fix it.

I have coding for PHP 7.2 and have pointed the CLI interpreter to a PHP 7.2 executable. What else can I do?

Thank you

Elliot, could you please show the context? I just tried "is_numeric" function on a simple example in PhpStorm and no warnings are shown. Moreover, autocomplete is working for it.

I encountered the same problem, where native classes and functions were not being recognized by PhpStorm (2019.1.2).

It appears something in the cache/indexing was corrupted as I couldn't pull up any quick documentation on it, nor could I navigate (Ctrl + click) to the definition... No obvious cause found...

The solution for me was to invalidate my cache (File->Invalidate Caches / Restart)

After re-indexing and re-caching it is working as expected now.

I had this problem ocour after I created functions.php file in src for symfony. Cache revalidation helped.

It happened to me after running an update. David's method cleared it up.

Had the same problems, and only

• disabling some 3rd party plugins

helped. I had two new RDF related plugins installed (LNKD.tech Editor, RDF and SPARQL). After disabling them PHPStorm again recognized php standard functions etc.

The same happened today after snap update.
Details:

PhpStorm 2020.2
Build #PS-202.6397.115, built on July 29, 2020
Licensed to PhpStorm Evaluator
Expiration date: August 29, 2020
Runtime version: 11.0.7+10-b944.20 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Linux 5.4.0-42-generic
GC: ParNew, ConcurrentMarkSweep
Memory: 841M
Cores: 4
Registry: run.processes.with.pty=TRUE
Non-Bundled Plugins: com.aurimasniekis.phppsr4namespacedetector, ru.adelf.idea.dotenv
Current Desktop: ubuntu:GNOME

Please try disabling all custom plugins at Settings | Plugins > click on a gear icon > "Disable All Downloaded Plugins", restart IDE and check the issue after that. 

I've tried disabling all plugins with built-in, cache clear, removing idea project dir. No luck!

Please try opening plugins directory and delete all plugin folders manually. and then restart IDE. If that doesn't help - please attach a screenshot of the problem + share your idea.log file. You can also contact us via Help | Contact Support to do this privately.

No luck. But I've just left my PC for few minutes and it works! Some background process...

I got the same bug after updating it to 2020.2

Same here :(

IntelliJ IDEA 2020.1.4 (Ultimate Edition)
Build #IU-201.8743.12, built on July 21, 2020
Runtime version: 11.0.7+10-b765.65 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
macOS 10.15.6
GC: ParNew, ConcurrentMarkSweep
Memory: 1981M
Cores: 8
Registry: suggest.all.run.configurations.from.context=true
Non-Bundled Plugins: Dart, io.flutter, Pythonid, com.jetbrains.php

Worked when I upgraded to

IntelliJ IDEA 2020.2 (Ultimate Edition)
Build #IU-202.6397.94, built on July 27, 2020
Runtime version: 11.0.7+10-b944.20 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
macOS 10.15.6
GC: ParNew, ConcurrentMarkSweep
Memory: 1981M
Cores: 8
Registry: suggest.all.run.configurations.from.context=true
Non-Bundled Plugins: Dart, io.flutter, com.jetbrains.php, Pythonid

I have the same Issue since i updated.

PhpStorm 2020.2
Build #PS-202.6397.115, built on July 29, 2020
Licensed to active value GmbH / Chris Adam
Subscription is active until June 16, 2021
Runtime version: 11.0.7+10-b944.20 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Linux 5.0.0-38-generic
GC: ParNew, ConcurrentMarkSweep
Memory: 1917M
Cores: 12
Registry: run.processes.with.pty=TRUE, ide.balloon.shadow.size=0
Non-Bundled Plugins: com.chrisrm.idea.MaterialThemeUI, com.jensteichert.themes.nightowl, com.mallowigi, de.espend.idea.php.annotation, fr.adrienbrault.idea.symfony2plugin, izhangzhihao.rainbow.brackets
Current Desktop: ubuntu:GNOME

I have this issue too after update to PhpStorm 2020.2

PhpStorm 2020.2
Build #PS-202.6397.115, built on July 29, 2020
Runtime version: 11.0.7+10-b944.20 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Windows 10 10.0
GC: ParNew, ConcurrentMarkSweep
Memory: 1981M
Cores: 8
Registry: run.processes.with.pty=TRUE, debugger.watches.in.variables=false
Non-Bundled Plugins: de.netnexus.camelcaseplugin, intellij.prettierJS, de.espend.idea.laravel, com.kalessil.phpStorm.phpInspectionsEA, de.espend.idea.php.annotation

I reinstalled PHPStorm with https://www.jetbrains.com/toolbox-app/
and the issue was resolved

Same issue after updating to 2020.2

To everyone still affected: please try the latest suggestion posted here by me. If this won't help - please contact us directly over Help | Contact Support

Disabling plugins and invalidating the cache didn't help.

As a workaround I found this solution: https://stackoverflow.com/questions/30328805/phpstorm-how-to-add-method-stubs-from-a-pecl-library-that-phpstorm-doesnt-curr

1. Clone the stubs repository

2. Configure the default stubs path

Same issue after updating to 2020.2. I tried to delete all plugins folders as you mentioned, delete .idea file of my project, restore default settings, reinstall PHPStorm... None of these solutions work.

Edit: The solution proposed by Arjan Frans temporarily solves the problem, thanks.

1) do you have PhpStorm installed via ToolBox app or a standalone app or via snap?

2) do you have "Core" PHP runtime enabled at File | Settings | Languages & Frameworks | PHP?

Arjan Frans thank you that actually helped!

Dmitry Tronin my PHPStorm is installed as a standalone app and "Core" PHP runtime is enabled. FYI, the solution proposed by Arjan Frans solves the problem.

PhpStorm 2020.2
Build #PS-202.6397.115, built on July 29, 2020
Licensed to La Coopérative des Tilleuls / Baptiste Meyer
You have a perpetual fallback license for this version
Subscription is active until July 30, 2021
Runtime version: 11.0.7+10-b944.20 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
macOS 10.15.5
GC: ParNew, ConcurrentMarkSweep
Memory: 4062M
Cores: 4
Registry: run.processes.with.pty=TRUE

Thanks for the info, but it's still not clear how did it happen. If anyone affected could share their logs via Help > Collect Logs and Diagnostic Data with us that would be great. 

Dmitry Tronin https://we.tl/t-UhQnZJ13Jn 

Thanks, downloaded.

Logs are looking alright.

Could you please:

1) attach a screenshot of File | Settings | Languages & Frameworks | PHP > PHP Runtime > Core 

2) share your project's /.idea folder

.idea folder: https://we.tl/t-zjXY6i6gUg