Checking entries of textfield

[mickeymauz]

Does someone have the code for PHP that will validate a text field only is alphanumeric characters? I would like to ommit all the !@#$%^&*()`=+,./<>?. Thanks

[Anscoop]

[[:alnum:]] is a character class built into PHP, that you can use.

[TechTalk]

Assuming "somefield" is the name of your text field that is being checked:

ereg("([0-9a-zA-Z])",$somefield)

HTH

~Chris

[mickeymauz]

What if I want to find it in the middle of a field?