regular expressions

[Anon]

Dear Reader,

I want to verify that a string coming from a form does only contain letters for one instance in the other case that it's only made up of numbers.

I've tried following tests:

eregi("([:alpha:])", $fName);

eregi("([a-zA-Z]*)", $fName);

eregi("[a-zA-Z]&[^0-9]", $fName);

Also if you have any good page for regular expressions.

Thank you very much

[Anon]

I'm not sure if this is what you are asking for... but...

if(eregi("[a-zA-Z]", $fName)) print "Letters";
if(eregi("[0-9]", $fName)) print "Number";

?

[Anon]

try matching the negative: that is, checking whether it isn't only numbers/letters. your english teacher may have told you not to use double negatives, but she never had to write regexes ;-)

if (!eregi("[^{a-zA-Z]",$str))} {#letters};

if (!eregi("[^0-9]",$str)) {#numbers};

--
rad