Run multiple PHP version on the same server using php-fpm.
The Apache web server uses virtual hosts to manage multiple domains on a single instance.
PHP-FPM uses a daemon to manage multiple PHP versions on a single instance. Together, you can use #Apache and PHP-FPM to host multiple PHP web-applications, each using a different version of #PHP, all on the same server, and all at the same time.
https://ibmimedia.com/blog/193/running-multiple-versions-of-php-on-apache-php-fpm
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