http://codereview.stackexchange.com/questions/43635/how-can-i-optimize-this-database-to-array-structure-code - Speed Test

gistfile1.php

<?php

class Item {
	public $id;
	public $type;
	public $value;
	public $label;
	public $optgroup;
	
	function __construct($id, $type, $value, $label, $optgroup) {
		$this->id = $id;
		$this->type = $type;
		$this->value = $value;
		$this->label = $label;
		$this->optgroup = $optgroup;
	}
}

class Container {
	private $items;
	
	function __construct($items) {
		$this->items = $items;
	}
	
	public function result() {
		return $this->items;
	}
}


function _format($STH)
{
    $data = [];

    foreach ($STH->result() as $row)
    {
        if ( ! $row->optgroup)
            $data[ $row->type ][ $row->value ] = $row->label;
        else
            $data[ $row->type ][ $row->optgroup ][ $row->value ] = $row->label;
    }

    // selects with a single optgroup can have that optgroup removed
    foreach ($data as $menutype => $optorkey)
    {  
        if (is_array($optorkey) && count($optorkey) == 1)
            $data[$menutype] = current($optorkey);
    }

    return $data;
}

$container = new Container(
	array(
		new Item(1, "car", "ix5", "Ford Taurus", "Ford"),
		new Item(2, "car", "ix6", "Ford Focus", "Ford"),
		new Item(3, "car", "ix9", "Cobalt", "Chevy"),
		new Item(4, "planet", "ix8", "Earth", "Default")
	)
);


for ($count = 0; $count < 100000; $count++) {
	_format($container);
}