Palindromes

[Anon]

Hello,

I am writing a program for a palindrome and would like to know if anyone knows of a script/function that eliminates
various characters (whitespace, any non-digit, a non-blank character, a non-word character etc.).

Thanks for your help.

[cordex]

Sure. You're looking for regular expressions. Check out the preg_replace() function at PHP.net

If you have a specific regular expression that you can't figure out, let me know and I'll see if I can't help you cook one up.

cheers,
Ben

[Anon]

Ben,

I think I will take you up on the offer.

For a palindrome php page I am creating
I need to use preg_replace()to replace whitespace, tab keys, spaces between words.

Can you help me with that? I am just learning PHP.

Thanks!

Vincent

[Anon]

try this (haven't tested it, but it should be a start)

$var = preg_replace('/( |\t)+/','',$var);

Theoretically, this should toast all tabs and spaces in $var.