RE: [PHP] Sloppy coding?

> -----Original Message----- > From: Shawn McKenzie [mailto:nospam@mckenzies.net] > Sent: 07 May 2003 05:21 > > I want to sidestep any pitfalls and try to be a good coder. > So what is the > difference between these two: > > if(!$somevar){ > ...do stuff > } This will "do stuff" if $somevar is undefined, NULL, FALSE, zero (integer 0 or float 0.0), "", "0", or an empty array. It will also issue a notice if $somevar is undefined -- and although you will only see this if you have error_reporting set to E_ALL, it's better practice to write code that won't issue any messages even at the highest level of reporting. If you want to do this test without the possibility of generating a message, use if(empty($somevar)). > > if(!isset($somevar)){ > ...do stuff > } This will "do stuff" only if $somevar is undefined or NULL, and will not issue any messages. Cheers! Mike --------------------------------------------------------------------- Mike Ford, Electronic Information Services Adviser, Learning Support Services, Learning & Information Services, JG125, James Graham Building, Leeds Metropolitan University, Beckett Park, LEEDS, LS6 3QS, United Kingdom Email: m.ford@lmu.ac.uk Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211