Installing php-soap on nginx with multiple php versions

Question

I am running a few sites that has different php versions running (7.0 and 7.4)

For one of the sites, when I try to run soap code, I get: Uncaught Error: Class 'SoapClient' not found

When I run

php -i | grep -i soap

i get the following output:

/etc/php/7.4/cli/conf.d/20-soap.ini,
soap
Soap Client => enabled
Soap Server => enabled
soap.wsdl_cache => 1 => 1
soap.wsdl_cache_dir => /tmp => /tmp
soap.wsdl_cache_enabled => 1 => 1
soap.wsdl_cache_limit => 5 => 5
soap.wsdl_cache_ttl => 86400 => 86400

I need to install the soap for php 7.0 and I am not that familiar with linux so I would love to get some step by step instructions.

Thanks!