Fixing the “unix:///var/mysql/mysql.sock” not found error on MAMP

If you've got this problem on mac (with MAMP):
PHP Error[2]: PDO::__construct(): [2002] No such file or directory (trying to connect via unix:///var/mysql/mysql.sock)

Try this:
sudo mkdir /var/mysql
sudo ln -s /Applications/MAMP/tmp/mysql/mysql.sock /var/mysql/mysql.sock