PHP versions in Microsoft Azure App Service

Azure provides support for specific PHP versions and beside the available versions, no version is supported. The supported PHP versions can be obtained using the Azure CLI commands mentioned below,

az webapp list-runtimes | grep php

Once a newer version found, you can use the below mentioned command in Azure CLI,

az webapp config set --name <app-name> --resource-group <resource-group-name> --php-version <supported version>

Please note that, at the time of writing, PHP 7.4 is the latest plan available for app service plan with operating system Windows and is currently not available for Linux. More details can be found athttps://docs.microsoft.com/en-us/answers/questions/65434/php-74-update-for-linux.html