Array dubbele optellen (unieke lijst maken) (Opgelost)

<?php
$producten = array(
			   array("product" => "nietmachine", "aantal" => 1),
			   array("product" => "schaar", "aantal" => 2),
			   array("product" => "pen", "aantal" => 3),
			   array("product" => "nietmachine", "aantal" => 11),
			   array("product" => "schaar", "aantal" => 22),
			   array("product" => "pen", "aantal" => 33),
			   );


$new_array = array();

$i = 0;
foreach($producten as $key)
{
	if(!in_array($producten[$i]['product'], $new_array))
	{
		$new_array[] = $producten[$i]['product'];
		$new_array_totals[] = $producten[$i]['aantal'];
	}
	else
	{
		$new_array_totals[array_search($producten[$i]['product'], $new_array)] += $producten[$i]['aantal'];
	}
	$i++;
}

$final = array_combine ($new_array, $new_array_totals);
?>

<pre>
<?php print_r($final);?>
</pre>


<?php
/*
Array
(
    [nietmachine] => 12
    [schaar] => 24
    [pen] => 36
)
?>

<?php
$producten = array(
			   array("product" => "nietmachine", "aantal" => 1),
			   array("product" => "schaar", "aantal" => 2),
			   array("product" => "pen", "aantal" => 3),
			   array("product" => "nietmachine", "aantal" => 11),
			   array("product" => "schaar", "aantal" => 22),
			   array("product" => "pen", "aantal" => 33),
			   );
 
 
$new_array = array();
 
$i = 0;
foreach($producten as $key)
{
	if(!in_array($producten[$i]['product'], $new_array))
	{
		$new_array[] = $producten[$i]['product'];
		$new_array_totals[] = $producten[$i]['aantal'];
	}
	else
	{
		$new_array_totals[array_search($producten[$i]['product'], $new_array)] += $producten[$i]['aantal'];
	}
	$i++;
}
 
$final = array_combine ($new_array, $new_array_totals);
?>
 
<pre>
<?php print_r($final);?>
</pre>
 
 
<?php
/*
Array
(
    [nietmachine] => 12
    [schaar] => 24
    [pen] => 36
)
?>