Php check for invalid characters

Utech22 March 16, 2008, 9:06am 1

I want to validate each fields by checking for invalid characters
such as [! # $ %& '* + - / =? ^]
What is the best way to go about it.

Topic	Replies	Views
Help: Invalid character check	46	March 16, 2008
Detecting specific characters in PHP strings	76	April 24, 2007
Validation Ahhhhh programming	36	March 20, 2008
Help with reg expression	112	August 29, 2007
Checking for character in textfield	102	February 25, 2007