Xdebug is a powerful tool for debugging PHP code, but it can be a memory hog when it is continually turned on. Xdebug can be quickly enabled and disabled by creating simple custom scripts.
Download these shell files on your Mac, make them executable and you are good to go!
curl -L https://gist.githubusercontent.com/Nikschavan/0222875b8ca913d19a10773c40764ca6/raw/8aecb01f11d12c58afdeb6a77505d780b8cd8313/disable-xdebug.sh -o /usr/local/bin/disable-xdebug
curl -L https://gist.githubusercontent.com/Nikschavan/0222875b8ca913d19a10773c40764ca6/raw/8aecb01f11d12c58afdeb6a77505d780b8cd8313/enable-xdebug.sh -o /usr/local/bin/enable-xdebug
chmod +x /usr/local/bin/*able-xdebug
enable-xdebug on your terminal to enable Xdebug and
disable-xdebug to disable it.