Two womanizers fall for a woman determined to keep her virginity. On the main floor of the Empire State Building in New York City, architect Donald Gresham engages in a mild flirtation with talkative Patty O'Neill, an aspiring actress. Don follows Patty to the observation deck, where he gives her a tube of lipstick that she had been admiring.
From Wikipedia, the free encyclopedia. Alphanumeric is a combination of alphabetic and numeric characters, and is used to describe the collection of Latin letters and Arabic digits or a text constructed from this collection.
ctype_alnum() is a godsend for quick and easy username/data filtering when used in conjunction with str_replace(). Let's say your usernames have dash(-) and underscore(_) allowable and alphanumeric digits as well. Instead of a regex you can trade a bit of performance for simplicity: <?php.