On Apache you could easily configure it through an htaccess file:
<IfModule mod_fcgid.c> Action php-fcgi /fcgi-bin/phpcgi-starter-5.3 </IfModule> <IfModule mod_fcgid.c> Action php-fcgi /fcgi-bin/phpcgi-starter-5.4 </IfModule>
Is there something similar for Nginx + PHP-FPM?
Just run each version of php-fpm on a different port (or socket) and configure the appropriate port in your
fastcgi_pass parameter in your nginx
server block. For instance, you might have 5.3 run on port 9000 and 5.4 run on port 9001.
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