These steps should have been mentioned in the prerequisites of the Laravel Installation Guide, since I'm surely not the only person trying to get Laravel running on macOS.
Install Mcrypt using Homebrew and PECL (comes with PHP)
# PHP 7.3
$ brew install mcrypt
$ pecl install mcrypt-1.0.3Find your php.ini:
$ php -i | grep "Loaded Configuration File"
Loaded Configuration File => /usr/local/etc/php/7.3/php.iniAdd this line to your php.ini:
extension=/usr/local/Cellar/php/7.3.x/pecl/20180731/mcrypt.soInstall Mcrypt using Homebrew
# PHP 7
$ brew install php70-mcrypt
# PHP 5
$ brew install php56-mcrypt --without-homebrew-phpAdd this line to /private/etc/php.ini:
# PHP 7
extension="/usr/local/Cellar/php70-mcrypt/7.0.x/mcrypt.so"
# PHP 5
extension="/usr/local/Cellar/php56-mcrypt/5.6.x/mcrypt.so"You are ready to go!
Upgrade Mcrypt using Homebrew
$ brew reinstall -fs php71-mcrypt
With macports:
sudo port install php71-mcrypt