Question

I want to create a multidimensional array based on a string.

the string has value $string="1/2/3"

and I want to assign $array[1][2][3]=something

actually the index of the array are described inside the $string

The $string has not same depth.

For example may be $string="1/2 OR $string="1/2/3/4/5 OR $string="1/2/3/5/7/8/9/9/6
so the number of keys in the multidimensional array is not standard.

Answer 1

Try with

<?php
$ind = '1/2/3/4/5/6/7/8/9/10/11/12';

$ind = '[' . join('][', explode('/',$ind)) . ']';
$fn = create_function('$var, $val','global ${$var}; ${$var}'. $ind. '= $val;');
$array = array();
$fn("array", "something");
echo '<pre>'.print_r($array, true).'</pre>';
?>

Much simplier version

<?php
$ind = '1/2/3/4/5/6/7/8/9/10/11/12';
$ind = '[' . join('][', explode('/',$ind)) . ']';
$array = array();
$val = "something";
eval('$array'.$ind.'=$val;');
echo '<pre>'.print_r($array, true).'</pre>';
?>

Some people could kill me for the eval function, but it works in this case perfectly 😛