This is a correct way to do login form auto-focus, checking to see if either username or password have focus already. This prevents someone from typing a username hitting TAB, then having JavaScript chime in, resetting focus to Username while user is typing in their password. In this case, the password is appended to the username which is in plaintext.

A small recursive php function to determine the size of a directory by adding all it's contents together and returning them as an integer.

Using the extract() Functio

Mass email list of email addresses from a mysql db table.

Pull items from a mysql db table and display in the following format-
item1, item2, item3

In the example code, the query will return all items that have the color "red" specified in the db.

Display contents of a folder, see comments in code.

Generate multi select box from data in db, then when submitted, each selection is written to a db table as it's own record, each tied together by a common record id.

Get the count of records from DB

With this function you can calculate the age of a person

Example:
echo "Age is: " . age("1984-07-05");

Result will be (23 Feb 2005) = "Age is: 20"

Return a random number within a gived range