if php

<?php
//-- data initialization
$data=array(
array('doni',2000),
array('dani',1000),
array('dini',500),
array('rani',2000),
array('doni',1500),
array('dani',2000),
array('dini',3000),
array('rani',1000),
array('roni',2000));
//-- result initialization
$hasil=array();
//-- data processing start here
foreach($data as $dt) $hasil[$dt[0]]=(isset($hasil[$dt[0]])?$hasil[$dt[0]]:0)+$dt[1];
//-- show the result
echo '<pre>';print_r($hasil);