How to sum values of the array of the same element id [duplicate]

Answer 1

Try this one

 693, 'quantity' => 40),
        array('id' => 697, 'quantity' => 10),
        array('id' => 693, 'quantity' => 20),
        array('id' => 705, 'quantity' => 40),
        );

$result = array();
foreach($array as $k => $v) {
    $id = $v['id'];
    $result[$id][] = $v['quantity'];
}

$new = array();
foreach($result as $key => $value) {
    $new[] = array('id' => $key, 'quanity' => array_sum($value));
}
echo '
';
print_r($new);
?>


You could also do the following:

 $id, 'quantity' => $sum);
}
echo '
';
print_r($final);
?>