Re: Problem with is_array() and empty() for $_SESSION...

Sorry for the duplicate... MS-Outlook Express returned an error message saying it had socket problem with PHP newsgroup. "Scott Fletcher" <scott@abcoa.com> wrote in message news:20031114172115.70837.qmail@pb1.pair.com... > Thanks for jogging my memory. I seem to be so focus on this for a couple of > hours and didn't happen to see that I make one minor typo with adding the > six $_SESSION data. I assign the odbc_result() to it, so forgot to > increment the number on one of them, so the rest after it was off by one. > So, it's my fault. > > One question though, wouldn't it make more sense to have the result be > either as 0 or 1 (or true or false) instead of blank or 1. I first > interpret the blank as something is wrong with the script or functions. > > Thanks, > Scott F. > > "Chris Shiflett" <shiflett@php.net> wrote in message > news:20031114165938.98959.qmail@web14306.mail.yahoo.com... > > --- Scott Fletcher <scott@abcoa.com> wrote: > > > session_start(); > > > > > > print_r($_SESSION); > > > //This one work because it spitted out datas from previous webpage > > > > > > echo (!(is_array($_SESSION))); > > > //This spitted out result as a blank > > > > This is because echo deals with strings. The boolean false is the empty > > string when converted. Because $_SESSION is an array, your is_array() > > returns true, and your not (!) makes the expression false. > > > > > echo empty($_SESSION[USER_ID]); > > > //This spitted out result as "1" > > > > Because you have not set this variable (at least, not in the code you > > provided), empty() returns true. The boolean true will be output as 1. > > > > > echo empty($_SESSION[CUSTOMER_ID]); > > > //This spitted out result as a blank > > > > This means $_SESSION['CUSTOMER_ID'] is not empty. > > > > > echo empty($_SESSION[USER_LOGON1]); > > > //This spitted out result as "1" > > > > This means $_SESSION['USER_LOGON1'] is empty. > > > > > echo empty($_SESSION['PHPSESSID']); > > > //This spitted out result as "1" > > > > This means $_SESSION['PHPSESSID'] is empty. > > > > > I have no idea what is the problem here. > > > > Do my comments help? If you are wondering why some things are defined and > > others are not, please show us the output of print_r() in addition to > > these conditional statements, and we can compare the results. Otherwise, > > we have to assume that your conditional statements are working as > > expected. > > > > Hope that helps. > > > > Chris > > > > ===== > > Chris Shiflett - http://shiflett.org/ > > > > PHP Security Handbook > > Coming mid-2004 > > HTTP Developer's Handbook > > http://httphandbook.org/ > > RAMP Training Courses > > http://www.nyphp.org/ramp