Functions custom handler with PHP 8.2

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Functions custom handler with PHP 8.2

Anonymous

I am currently using Functions with PHP 7.4 as a custom handler, which is the most recent version installed on the system:

"C:\Program Files\PHP\v7.4\php.exe"

I would like to use a more recent version of PHP though. When I decompressed a PHP 8.2.9 zip and uploaded the whole directory, I received HTTP error 500 on the HTTP trigger.

Is it possible for me to use a newer version of PHP?

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Answer 1

MuthuKumaranMurugaachari-MSFT 22,421

Erol Perry Thanks for posting your question in Microsoft Q&A. Custom handlers apps can be deployed to different Function plans and the support for PHP version depends on the environment where you host. The latest supported PHP version is PHP 8.2 as per az functionapp list-runtimes and it is only available on App Service Linux instances (Windows only support up to PHP 7.4). Also, checkout PHP Support Timeline for the support status.

To Set PHP version, you can use the following CLI command:

az functionapp config set --resource-group <resource-group-name> --name <app-name> --linux-fx-version "PHP|8.1"

For more flexibility, you may have to consider custom handlers in a container platform like Kubernetes with the latest PHP installed. If you experience 500 error on built-in server, this might be due to concurrency and check out https://techcommunity.microsoft.com/t5/apps-on-azure-blog/concurrency-on-azure-functions-php-with-custom-handlers/ba-p/2836495.

I hope this helps with your questions and let me know if you have any other.

If you found the answer to your question helpful, please take a moment to mark it as "Yes" for others to benefit from your experience. Or simply add a comment tagging me and would be happy to answer your questions.

Anonymous

2023-08-22T14:46:32.4466667+00:00

Thank you for your reply. I don't have any problem with PHP on Web apps, this is specifically about Function apps.

I don't believe this is concurrency related since I am only making one request at a time for testing purposes. Specifically, I believe Function app does not want to run the new PHP binary which I uploaded.

Should it be possible for me to upload a custom PHP binary to Function app and execute it successfully, or must I use the ones already contained in C:\Program Files\PHP?
MuthuKumaranMurugaachari-MSFT 22,421 Reputation points

2023-08-22T14:56:30.85+00:00

Erol Perry Azure Functions are built on top of the App Service infrastructure and hence the latest PHP version is not supported (unless App Service supports). Got that it is not concurrency related and you can validate with supported PHP 8.1 version (Linux). Unfortunately, it is not possible to upload PHP binary that way.
Anonymous

2023-08-22T16:03:24.4+00:00

I have attempted to run the command you gave earlier but it results in "bad request". What is the cause of this error please?

C:\>az webapp config set --resource-group myres16 --name myfunction32 --linux-fx-version "PHP|8.1"

Operation returned an invalid status 'Bad Request'
MuthuKumaranMurugaachari-MSFT 22,421 Reputation points

2023-08-22T16:09:40.8033333+00:00

Erol Perry This command is to set for App Service plan (Linux). Can you let me know our Function app plan?
Anonymous

2023-08-22T16:16:41.8733333+00:00

My App Service plan for my Function App is Y1.
MuthuKumaranMurugaachari-MSFT 22,421 Reputation points

2023-08-22T19:35:22.5066667+00:00

Erol Perry I have tested command az functionapp config set --resource-group <resource-group-name> --name <app-name> --linux-fx-version "PHP|8.2" in my Func app with consumption plan (Y1) and faced the same error. However, this command only works for App Service Linux instances (like mentioned above). So, please create a function app with App Service plan (Linux) and validate it.

I will double confirm if any workaround for the consumption plan. Sorry about the inconvenience caused.
Anonymous

2023-08-22T23:19:41.44+00:00

Thanks for your reply. I have created a Linux-based Function App but I am getting an error with the command you supplied.

I was under the impression that Function apps do not support PHP natively and it must be run via a custom handler.

C:\>az functionapp config set --resource-group myres16 --name myfunction32 --linux-fx-version "PHP|8.2"

The parameter LinuxFxVersion has an invalid value.
MuthuKumaranMurugaachari-MSFT 22,421 Reputation points

2023-08-23T02:08:13.28+00:00

Erol Perry If you are using bash, you would have to replace | with : like "PHP:8.2". Please send an email to azcommunity@microsoft.com referencing this thread with your subscription ID (not name), details and subject as "Attn: Muthu". I will assist you offline to help you fully mitigate the issue.
MuthuKumaranMurugaachari-MSFT 22,421 Reputation points

2023-08-24T13:14:35.6866667+00:00

Erol Perry Just a follow up to see if you were able to resolve the issue or let me know if you need assistance.
Anonymous

2023-08-24T14:49:46.3633333+00:00

I've decided I'll transition the code to Node.js to avoid problems with custom handlers. Thank you for your help in this.

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Functions custom handler with PHP 8.2

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