PHP

FlashPanel makes it easy to toggle the default version for the server, set maximum file upload size, maximum execution time, and enable/disable OPCache.

! Install PHP manually

If you choose to manually install PHP versions on your server, FlashPanel will not know about those PHP settings. FlashPanel only knows about PHP settings managed through the FlashPanel control panel.

Multiple PHP Versions

When creating a server, you must decide which version of PHP you want to install as the default version. The PHP CLI on your server will point to the installed version selected at creation time.

Once the server has been created, FlashPanel makes it easy to install additional instances alongside the default instance. In the following document, we will discuss how to manage these additional PHP versions.

Setting

You can install additional PHP versions through the Applications tab on the server's management console. Once an additional PHP version has been installed, you can select it when creating a website or when switching the PHP version of a website.

When you install a new PHP version to your server, FlashPanel creates and configures the PHP-FPM process for that version. This means your server will be running multiple versions of PHP at the same time.

Uninstall

You can uninstall PHP versions through the Applications tab on the server's management console. You can choose to uninstall the PHP version as long as:

• There are other versions installed.
• The version you want to uninstall is not the server's default version for new sites.
• The version you want to uninstall is not the server's default version on CLI.
• The version you want to uninstall is not used by any website.

Convert PHP Default

The 'default' PHP version is the PHP version that will be used by default when creating a new website on the server. Conversion steps:

1. At the server management console > Select PHP Default Version
2. Select the PHP version you want to transfer
3. Select Update

When selecting a new PHP version as the 'default' version for your server, PHP versions used by existing websites will not be updated.

Install PHPRedis with igbinary and zstd + lz4

WARNING

OpenLiteSpeed ​​does not apply

• Go to Application > PHP and install extension php8.2-redis, php8.2-igbinary, php8.2-lz4.

• Go to Server > Terminal (root user) and run the command

  apt update && apt install liblz4-dev libzstd-dev
  pecl uninstall redis
  pecl install --configureoptions 'enable-redis-igbinary="yes" enable-redis-zstd="yes" enable-redis-lz4="yes"' redis

  It will report an error related to php_ini but can be ignored.

  Check the results with the command php -ri redis

  The result as shown in the picture is ok.

  

Those who run multiple sites sharing the same Redis instance, especially 'Wordpress' and 'Woocommerce' sites, should consider turning on compression for more optimization.

Blog comparing redis compression from DoorDash: https://doordash.engineering/2019/01/02/speeding-up-redis-with-compression/

Some common PHP configuration settings

WARNING

Changing the following settings will apply the changes to all PHP versions installed on the server.

Maximum file upload size

You can configure the maximum file upload size in the server management console. Values ​​are provided in megabytes. For reference, 1024MB is 1GB.

Maximum execution time

You can configure the maximum execution time at the server management console. The value provided is in seconds.

OPcache

Optimizing OPcache PHP for production configures OPcache to store your compiled PHP code in memory to significantly improve performance. If you choose to optimize OPcache for production, you should verify that your deployment script [restart PHP-FPM service](cookbook.md#restart-restart- php-fpm) at the end of each deployment.

Enable PHPOccache at the server management console