another PHP5 array > string offset isse

[Rodxxx]

soo my grand idea was using a function for setting/getting/unsetting vars to a session (though that function thingy shouldn't affect the issue itself

 

let's go for simple example like this >

function example($key1, $key2)
{
      unset($_SESSION[$key1][$key2]);
}

 

and just for example creating a function call like

example("strawberry", "cake");

 

the call itself isnt really required as the interpreter doesnt care for it anyway

 

there are a few things to note: $_SESSION is a superglobal ARRAY  and unset is an array function too!

what actually happens is .. PHP5 tries to render $_SESSION as a string and thus creating the fatal error

"Cannot unset string offsets" note that .. even with defining $key1 and $key2 via casting or settype to string .. and $_SESSION to array .. this doesnt help at all as it's silently ignored

 

i've yet to find a solution on how to explain PHP that this var is NOT a string and was never used as such and will never be used as such .. maybe i am just ignoring a simple error in this syntax as code like that worked fine for PHP4  and would work without such sideeffects if the PHPdevs would just stick to use {} operators for strings instead of trying to force in [] operators which do exactly the same and thus creating this issue in the first place

 

any help in this issue would be appreciated as i am kind of at a loss here

 

 

[hansford]

I don't have that problem with php 5.2.5. This script gives me no errors.

 

<?php

$key1 = 'name';

$key2 = 'first';

$_SESSION['name']['first'] = 'frank';

 

example($key1,$key2);

 

function example($key1,$key2){

 

echo $_SESSION[$key1][$key2];

 

unset($_SESSION[$key1][$key2]);

 

}

?>

[kenrbnsn]

Can we see the function in a real script that gives you the error? At some point you may have done something like

<?php
$_SESSION = 'a string';
?>

 

which made the $_SESSION variable into a sting instead of an array.,

 

Ken