PHP > REGEX Validation

With PHP's built in regular expression features we can create a syntax that will search through text and change cetain patterns. Check out Wikipedia's definition of Regular expression for more information.

If your interested in learning more about Regex, I recommend visiting Regular-Expressions.info. This is a excellent resource for anything related to regex.

Here is a couple regex samples I've found useful for validation:

Email Addresses

Postal Codes

See also

PHP manual on Regular Expression Functions