variable variables and arrays.

Anon

It seems I've been beating on this all DAY...

I have a string defined as follows:

$string='b[a][c]';

I have a variable $b defined thusly...

$b[a][c]=5;

How do I reference variable $b using variable $string?

I've tried every variation of

echo ${$b};

echo $$b;
echo ${"$b"};
echo {$$b};

I could think of - and this one just has me STUMPED...

Is PHP just unable to do this?

-Ben

Anon

I mean, ${$string}, etc. below 😉

Benjamin Smith wrote:

It seems I've been beating on this all DAY...

I have a string defined as follows:

Anon

Hi benjamin,
sorry i have the same problem ... have you any suggestion now?

To ALL PHP-Specialist's Please Help US!!!!

Anon

Hi,

Did you solve this? I'm desperate to get this working.

why doesn't this work...

$fred = array("item" => "hello");
$var_name = 'fred["item"]';

echo $$var_name; // doesn't work
echo ${$var_name}; // doesn't work either

Anon

hi,

the question is what you make visible if the Variable is an Array.

$array["Item"]

is not a Variable.

$array is the variable.

["Item"] is the param to reach one Element of an Array.

so the syntax $$array["Item"] can't find a Variable . only $$array without the params can find the right place in memory.

but if you try to access it for example echo $$array you only see "ARRAY" as output.

If you now want to reach the ["Item"] entry you must you the array functions of php.

but i must warn you. this is not the right way for accessing arrayentries. i give up this way and make use of the class functions of php. with that i have much more flexib. and better performance.

look for &$Variable references.

good luck ;-)

;-)