As a PHP developer, sometimes you might want to set the custom configuration file (.ini) to read when PHP starts up. For this article, I would like demonstrate how to load custom configuration file (.ini) in the Azure App Service.
By default, we set the PHP_INI_DIR = /usr/local/etc/php/conf.d, so when using SSH on Kudu, you could see there are lots of .ini files:
Based on this, you might think we could just manually add our custom .ini files in /usr/local/etc/php/conf.d, but it will not work after restart. Since only "/home" data will be persistent after restarting App Service. So what we need to do is to add our .ini in "/home", E.g. "/home/site/ini"
For example, if I would like to modify "upload_max_filesize to 64M (defualt is 2M) and post_max_size to 64M (default is 8M)" for the PHP website, I could follow the below steps to achieve it:
Step 1:
Use like vi/vim command to add setting.ini file in the "/home/site/ini" folder
Step 2:
PHP supports scanning multiple directories for .ini files. For this we need to set PHP_INI_SCAN_DIR with ":" to separate values on the Application Setting for the target App Service.
E.g. PHP_INI_SCAN_DIR = :/home/site/ini
This ensures that we load *.ini files from /usr/local/etc/php and then load from /home/site/ini
After, we check the value by simple php page and it will show upload_max_size and post_max_size are set as 64M now.
Reference:
- Understanding the Azure App Service file system: Understanding the Azure App Service file system · projectkudu/kudu Wiki · GitHub
- Configure a PHP app for Azure App Service: Configure PHP apps - Azure App Service | Microsoft Learn
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