Re: Forms : Validating user input is integer

----- Original Message ----- From: Matt Williams <matt@yewlands.com> To: boclair <boclair@bigpond.net.au> Sent: Thursday, April 05, 2001 9:03 PM Subject: RE: [PHP-DB] Forms : Validating user input is integer > > > To gain the full benefit of your suggestion I find that I can validate > > for a wrong entry containing a mix alphabetical and numerical > > characters by altering the elseif line to read > > > > elseif (!eregi("[0-9]",$num) || eregi("[a-z]",$num)) > > > > Agreed? > > > > mmmm yes and no. > > I've done a lot of testing for this and using just the first one has never > let any values of $num through unles they've contained only numbers. > AFAIK (!eregi("[0-9]",$num) should always return false or 0 or whatever it > is unless it contains only numbers. xxxxxxxxxxxx When I used only elseif (!eregi("[0-9]",$num) { } an input 2i passed the variable 2 xxxxxxxxxxxx > You could also use [^a-zA-Z] for letters you don't want. > so maybe something like (!eregi("([0-9]||[^a-zA-Z])",$num)) > not tried so don't rely on that. xxxxxxxxxxxxxx correcting some typos this does the job elegantly. Should read elseif (!eregi(("[0-9]" || "[^a-zA-Z]"),$num)){ } xxxxxxxxxxxxxx > Check out the phpbuilder.com regexp tutorial, I find it a good resource > http://www.phpbuilder.com/columns/dario19990616.php3 Have read it and got confused. Will re-read it with my eyes open. Thanks for holding my hand. Tim