mcrypt setup in 10.10

# If you haven't done this already since upgrading, you need to:

xcode-select --install

# then build mcrypt with brew:

brew install php55-mcrypt

# If you don't have a php.ini already then copy the default over:

[ ! -f /etc/php.ini ] && sudo cp /etc/php.ini.default /etc/php.ini

# edit /etc/php.ini and add the following line in the [mcrypt] section:

extension=/usr/local/Cellar/php55-mcrypt/5.5.18/mcrypt.so

# then restart Apache:

sudo apachectl restart

# That should do the trick!