Magento – SQLSTATE[HY000] [2002] No such file or directory error

Just a guess, but it sounds like

1. Your command line php executable uses a different php.ini file than the web server

2. The php.ini file your command line version uses has a different, and invalid, value set for the mysql.default_socket ini setting

When you specify a MySQL server host as localhost, you're telling the system to use this socket file to connect to the database server. Check the value when using your local web-server, and make sure that same value is set for the command line program's ini file.

You might also have some luck changing the server to 127.0.0.1 from localhost. (When the system sees an IP address, it knows not to connect via the socket file, but instead to connect via TCP)

It could be a guess, and can be an alternate to your problem too. What i think is Your settings:

Admin: Catalog > Manage products Choose a product: inventory

• Qty = Your quantity

• Qty for Item's Status to Become Out of Stock = 0

• Stock availability: in stock

May not be proper:

There is a similar setting in admin also:

Admin: System > Configuration Inventory: Qty for Item's Status to

Become Out of Stock = 0

Try checking these two configurations, this may be the cause.

Alternate:Change your settings to 1, for out of stock

Admin: Catalog > Manage products Choose a product: inventory

• Qty = Your quantity

• Qty for Item's Status to Become Out of Stock = 1//Update this

• Stock availability: in stock

This way whenever you have 1 product in inventory it will not be able to checkout, and you can resolve your issue.