How can I enable legacy mysql

[electricmessiah]

I'm trying to get some old sites working that use deprecated mysql_connect(). Is there an environment var I can use in my stack to enable the legacy 5.6 mysql as the example below?

PHP 5.6 was the last version to support the original mysql_connect() function. 
If your WordPress site is very old (pre-v3.9), it must have the mysql extension, not just mysqli. 

environment:
      - PHP_EXTENSIONS=mysql mysqli pdo_mysql

[electricmessiah]

Solved with this, but is there an easier/cleaner way?

entrypoint: ["/bin/sh", "-c"]
    command: 
      - |
        if command -v phpaddmod >/dev/null 2>&1; then
          phpaddmod mysql mysqli pdo_mysql
        elif command -v php-extension >/dev/null 2>&1; then
          php-extension install mysql mysqli pdo_mysql
        else
          echo "No helper found, attempting manual enable"
          docker-php-ext-install mysql mysqli pdo_mysql
        fi
        /usr/local/sbin/php-fpm

[jhmckimm]

Solved with this, but is there an easier/cleaner way?

Create your own Dockerfile that is based on the shinsenter image you wish to use, and simply run RUN phpaddmod mysql, i.e:

FROM shinsenter/php:8.5-fpm-nginx@sha256:b9b9a7a5b9ef8b2f67fc400a124c8f9e24b67a18c53183319cf7c8a2c062e80c

RUN phpaddmod xdebug

[shinsenter]

@electricmessiah cc @jhmckimm
While I don't recommend installing PHP extensions at container startup, if you need to, please refer to this discussion on installing an extension via a startup script.
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