The PHP language can be enhanced through the use of extensions, which provide to PHP scripts new internal functions, classes, resource types, streams (also stream wrappers and filters) and, in general, can do anything a native program would be able to do.
How to install gmp extension for php 7.2.1 using MAMP on OSX? I'm trying to encrypt a token with php and …
php composer-php mamp php-extension php-gmp