Install brew nginx with phpbrew php-fpm 7.3.10 on macOS (this installation allows to run nginx and php-fpm (from phpbrew) as root but chrooted with the current user - take care if there is multiple developper account on mac, that will potentially make trouble between accounts).

install-nginx-with-phpbrew.sh

// First follow https://gist.github.com/abenevaut/fd21704ead845e5bc14ca93fa8d0a18f but modify the line 17 like follow
// add +fpm to compile php-fpm
phpbrew --debug install php-7.3.10 +gd +default +sqlite +mysql +fpm +bz2=/usr/local/Cellar/bzip2/1.0.6_1/ +zlib=/usr/local/Cellar/zlib/1.2.11/ -- --with-gd=shared

brew install nginx

sudo emacs /usr/local/etc/nginx/nginx.conf
sudo emacs /Users/YOUR_MACOS_USERNAME/.phpbrew/php/php-7.1.29/etc/php-fpm.d/www.conf

// In previous config files, we set user and group to run nginx and php-fpm as setted user and user group (logic)..
// Now we should run nginx and php-fpm as root
// So, we need to setup phpbrew for root user
sudo su
phpbrew init

emacs ~/.phpbrew/bashrc
// add at top of file
export PHPBREW_HOME=/Users/YOUR_MACOS_USERNAME/.phpbrew
export PHPBREW_ROOT=/Users/YOUR_MACOS_USERNAME/.phpbrew

emacs ~/.bash_profile
// add following line
[[ -e ~/.phpbrew/bashrc ]] && source ~/.phpbrew/bashrc

source ~/.bash_profile
// check phpbrew work
phpbrew --version

// now leave root user ctrl+C

// Now we can start nginx and php-fpm as root to run it as setted user
sudo brew services start|stop|restart nginx
sudo phpbrew fpm start|stop

nginx.conf

user YOUR_MACOS_USERNAME YOUR_MACOS_USER_GROUP_NAME;
worker_processes 16;
events {
  worker_connections  4096;  ## Default: 1024
}
http {
     server {
          server_name localhost;
          listen 8000;
          root /COMPLETE_PATH_TO_SYMFONY_PROJECT;

          # If user writes the app_xxx.php into the url, remove it:
          rewrite ^/app_dev\.php/?(.*)$ /$1 permanent;

          location / {
               index app_dev.php;
               rewrite ^/(.*)$ /app_dev.php/$1 last;
               return  403; # If the rewrite was not succesfull, return error.
          }
          # DEV
          # This rule should only be placed on your development environment
          # In production, don't include this and don't deploy app_dev.php or config.php
          location ~ ^/(app_dev|config)\.php(/|$) {
               # fastcgi_pass unix:/var/run/php5-fpm.sock;
               fastcgi_pass unix:/Users/YOUR_MACOS_USERNAME/.phpbrew/php/php-7.3.10/var/run/php-fpm.sock;
               fastcgi_split_path_info ^(.+\.php)(/.*)$;
               include fastcgi_params;
               # When you are using symlinks to link the document root to the
               # current version of your application, you should pass the real
               # application path instead of the path to the symlink to PHP
               # FPM.
               # Otherwise, PHP's OPcache may not properly detect changes to
               # your PHP files (see https://github.com/zendtech/ZendOptimizerPlus/issues/126
               # for more information).
               fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
               fastcgi_param DOCUMENT_ROOT $realpath_root;
          }

          # return 404 for all other php files not matching the front controller
          # this prevents access to other php files you don't want to be accessible.
          location ~ \.php$ {
               return 404;
          }

          error_log /usr/local/var/log/nginx/api_error.log;
          access_log /usr/local/var/log/nginx/api_access.log;
     }
}

www.conf

// /Users/YOUR_MACOS_USERNAME/.phpbrew/php/php-7.1.29/etc/php-fpm.d/www.conf then change value of :

user = YOUR_MACOS_USERNAME
group = YOUR_MACOS_USER_GROUP_NAME