Question

How can I delete an element from a multi-dimensional array given a key?

I am hoping for this to be greedy so that it deletes all elements in an array that match the keys I pass in. I have this so far where I can traverse a multi-dimensional array but I can’t unset the key I need to because I don’t have a reference to it!

function traverseArray($array, $keys)
{ 
    foreach($array as $key=>$value)
    { 
        if(is_array($value))
        { 
            traverseArray($value); 

        } else {

            if(in_array($key, $keys))
           {                    
                //unset(what goes here?) 

            }

        } 
    }

}

Answer 1

The following code works (and doesn’t use deprecated stuff), just tested it:

function traverseArray(&$array, $keys) { 
  foreach ($array as $key => &$value) { 
    if (is_array($value)) { 
      traverseArray($value, $keys); 
    } else {
      if (in_array($key, $keys)){
        unset($array[$key]);
      }
    } 
  }
}