Thread

Hi All,
If i am checking a session for a value, and it does not exist… It logically returns boolean FALSE.

The problem i have is how do i check this???
if i check with an isset() - it detects it as a true…
if i check for != FALSE it throws a PHP notice for undefined index…

the only logical way to check this is by check both isset() && != FALSE like below… but this seems like overkill for something that should be clean cut… can anyone advise?

$value = FALSE;
if (isset($value) && $value !== FALSE) { echo "true"; } else { echo "false"; }

If you’re using the session library,

$this->session->userdata('my_value');

Will return the value if it exists, or false if it doesn’t.

if($this->session->userdata('my_value') !== FALSE) {

If you’re not using the session library, and are checking a normal variable like $value, then what you have is technically correct.

Hi Noctrum,
That is kind of my point… I am using the session library, and if the item does not exist it throws up the error as mentioned above:

// Monkey does not exist in session!!!
if ($this->session->userdata['monkey'] !== FALSE) { echo "false is stated"; } else { echo "true is stated"; }

And the error:
A PHP Error was encountered
Severity: Notice
Message: Undefined index: monkey

I know this gives the correct answer and with error reporting off this will be suppressed - but still not ideal…

Hi Noctrum,
That is kind of my point… I am using the session library, and if the item does not exist it throws up the error as mentioned above:

// Monkey does not exist in session!!!
if ($this->session->userdata['monkey'] !== FALSE) { echo "false is stated"; } else { echo "true is stated"; }

And the error:
A PHP Error was encountered
Severity: Notice
Message: Undefined index: monkey

I know this gives the correct answer and with error reporting off this will be suppressed - but still not ideal…

Offcourse it gives an undefined index.
It must be something like this:

// Monkey does not exist in session!!! mind the () instead of: []
if ($this->session->userdata('monkey') === FALSE) 
{ 
  echo "false is stated"; 
} 
else // its true so..
   { 
    echo "true is stated"; 
   }

Ahhhhh balls… i am with you… stupid typo and missed characters on my behalf.
Thanks for pointing out the obvious to the blind!!! 😊

Ahhhhh balls… i am with you… stupid typo and missed characters on my behalf.
Thanks for pointing out the obvious to the blind!!! 😊

no problem…
With 6 pear of eyes you see more then just two.