PHP strip individual keys and shunt array

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//----------------------------------------------------------
//
//	Syntax: $myNewArray = remKey($myOldArray, 4)
//	[This will remove the 4th attribute from the array]
//
//-----------------------------------------------------------
 
function remKey($arr, $key)
{
 $i = 0;
 $ii = 1;
 $found = false;
 
 //Loops through all the existing array keys
 while (isset($arr[$i]))
 {
     //checks if the key matchs the one to be remove
     //or if that key has been found
     if ($i == $key || $found == true)
     {
         //overwrite the current key with the previous
         $arr[$i] = $arr[$ii];
         //specifies the key has been found and overwritten
         $found = true;
     }
     //if the key hasn't been found the array
     //just repopulates itself
     else
     {
         $arr[$i] = $arr[$i];
     }
     $i++;
     $ii++;
 }
 //counts the amount of keys in the array, then deducts one
 $c = count($arr);
 $c--;
 //removes the last key completely so the array has the specified
 //one overwritten, and the last one is now a duplicate of the
 //second from last array key.
 unset($arr[$c]);
 
 return $arr;
}
?>