Array's with a variable depth

[nielskg]

Hi,

I have a problem I just can't seem to solve!

I have a string containing the key's of a variable array, for example :

• $string = "['key1']['key2']['key3']";

So the ammount of key's can be variable in this string (sometimes there are 2, sometimes there are 5)...

The thing I want to do is assign a value to this 'key string' something like :

• $array = "arrayName" . $string;
  $$array = "value";

  // This should now print "value" :
  print $arrayName['key1']['key2']['key3'];

I hope you guys know what I mean...

Greetings,
Niels

[laserlight]

Must you use a string of the form:
$string = "['key1']['key2']['key3']";

If you can use:
$string = "key1,key2,key3";

then this function might work:

function arrayMultiKey($keystr, $array) {
	if (($keys = explode(',', $keystr)) !== false) {
		$size = count($keys);
		$ret = $array[$keys[0]];
		for ($i = 1; $i < $size; $i++) {
			$ret = $ret[$keys[$i]];
		}
		return $ret;
	} else {
		return false;
	}
}

Otherwise you'll have to convert the format.

[sidney]

you should be able to use eval to do this

  

$string = "['key1']['key2']['key3']";
$array_name='arrayName';
eval('$'.$array_name. $string . '="value";'); 

print $arrayName['key1']['key2']['key3']; 

edit removed stray comma