Fix mysql.sock connection problem PHP, MySQL in Mac Mountain Lion

I was setting up a PyroCMS site on my Mac (Mountain Lion) and I had this error:

A Database Error Occurred
Unable to connect to your database server using the provided settings.

Filename: core/Loader.php

Line Number: 1191

So I followed the instruction of this forum: http://ellislab.com/forums/viewthread/207916/
Changing the 'db_debug'  => true, to false on the database.php file.

After doing this I tested again the site and this errors appear:

A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: core/MY_Controller.php

Line Number: 97

A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: core/MY_Controller.php

Line Number: 113

An Error Was Encountered [ 500 ]
Unable to load the requested language file: language//choice_lang.php

So I kept on searching and then I found this link: http://stackoverflow.com/questions/4219970/warning-mysql-connect-2002-no-such-file-or-directory-trying-to-connect-vi/7264459#7264459

I didn't have /var/mysql/mysql.sock file, so I followed the instructions:

If you have /tmp/mysql.sock but no /var/mysql/mysql.sock then...

cd /var 
mkdir mysql
cd mysql
ln -s /tmp/mysql.sock mysql.sock

If you have /var/mysql/mysql.sock but no /tmp/mysql.sock then

cd /tmp
ln -s /var/mysql/mysql.sock mysql.sock

You will need permissions to create the directory and link, so just prefix the commands above with sudo if necessary.

And it works!