Access multidimensional array with a path-like string

Question

I have a function called get_config() and an array called $config.

I call the function by using get_config('site.name') and am looking for a way to return the value of $config so for this example, the function should return $config['site']['name'].

I'm nearly pulling my hair out - trying not to use eval()! Any ideas?

EDIT: So far I have:

function get_config($item)
{
  global $config;

  $item_config = '';
  $item_path = ''; 

  foreach(explode('.', $item) as $item_part)
  {
    $item_path .= $item."][";

    $item = $config.{rtrim($item_path, "][")};
  }

  return $item;
}

Not really. I need to then use the split string to access an multi-dimensional array - which I can't seem to do with explode(). — Connor Gurney
– Connor Gurney, Commented Feb 8, 2014 at 19:34

hek2mgl · Accepted Answer · 2014-02-08 19:49:24Z

1

This should work:

function get_config($config, $string) {
    $keys = explode('.', $string);
    $current = $config;
    foreach($keys as $key) {
        if(!is_array($current) || !array_key_exists($key, $current)) {
            throw new Exception('index ' . $string . ' was not found');
        }
        $current = $current[$key];
    }
    return $current;
}

edited Feb 8, 2014 at 19:49

answered Feb 8, 2014 at 19:33

hek2mgl

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1 Comment

Connor Gurney Over a year ago

Yes! It works. Thank you! I will accept your answer as soon as I can :D

Bryan · Accepted Answer · 2014-02-08 19:35:52Z

0

you could try something like...

function get_config($item)
{
      global $config;
      return $config[{str_replace('.','][',$item)}];
}

answered Feb 8, 2014 at 19:35

Bryan

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Comments

Lovy · Accepted Answer · 2014-02-08 19:38:15Z

0

Inside your get_config function, you can parse the string using explode function in php

function get_config($data){
 $pieces = explode(".", $data);

 return $config[$pieces[0]][$pieces[1]];

}

answered Feb 8, 2014 at 19:38

Lovy

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