check if letter is in string

[miles_rich]

how would you check to see if there was a "#" in a string??

String 1 : "Hello the#e how are you";
String 2 : "Hello there how are you";

So string 1 would return 'yes', but string 2 would return 'n', because string 1 has a hash in it but string 2 doesnt.???

[carrion42]

There's plenty of possibilities, but you could use the
function ereg, for example.

ereg('#',$string1);

should do the job for you, it returns a boolean true for string1 and false for string2

I'd recommend reading the php manual sections on regular expressions and String-functions

edit
Someone mentioned this article before, might also come in handy if you're trying to do more complex string operations.
http://www.phpbuilder.com/columns/dario19990616.php3
/edit