Re: Forms : Validating user input is integer

"boclair" <boclair@bigpond.net.au> wrote in message news:004801c0bdc7$13afbe00$7ac22dcb@qld.bigpond.net.au... | | ----- Original Message ----- | From: Matt Williams <matt@yewlands.com> | To: boclair <boclair@bigpond.net.au> | Sent: Thursday, April 05, 2001 9:03 PM | Subject: RE: [PHP-DB] Forms : Validating user input is integer | | | > | > > To gain the full benefit of your suggestion I find that I can | validate | > > for a wrong entry containing a mix alphabetical and numerical | > > characters by altering the elseif line to read | > > | > > elseif (!eregi("[0-9]",$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]"),$num)){ } | xxxxxxxxxxxxxx or even just elseif (!eregi("[^a-zA-Z]"),$num)) { } Tim Morris