Re: empty variables from a form

FYI, isset() will return true for an empty variable. You use isset() only when you expect there to be no variable. But for a hard coded HTML form the variable will *always* be set (except in the case of check boxes) even if thas no value. So your only options are to use empty() or test the string against the litteral expression. if($myvar == ''); ..or.. if(empty($myvar)); -Kevin ----- Original Message ----- From: "Sunfire" <rusty_81@msn.com> To: <php-general@lists.php.net> Sent: Wednesday, February 05, 2003 12:40 PM Subject: Re: [PHP] empty variables from a form > tnx will try that my other code looked something like that but it didnt > work.. probably had the (and ) in the wrong places... i set it up as the > whole statement as 1 if statement not 3 different ones.. > > > ----- Original Message ----- > From: "Erich Beyrent" <Erich.Beyrent@chron.com> > To: "Sunfire" <rusty_81@msn.com> > Sent: Wednesday, February 05, 2003 1:54 PM > Subject: Re: [PHP] empty variables from a form > > > > > hi.. > > > > > > how would you test for an empty (unused) variable from a form.. > > > i have a phone number split into 3 different vairiables and want to test > > to > > > see if they were used in the form before displaying either the phone > > number > > > itself or just leaving it out of the display... what code would be good > to > > > test it with.. the variables are $ac2 $ext2 and $num2 > > > > Use the isset() function: > > > > if(isset($ac2)) and > > if(isset($ext2)) and > > if(isset($num2)) { do something } > > else { do something else } > > > > -Erich- > > > > > > > > > > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.443 / Virus Database: 248 - Release Date: 1/10/2003 > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >