<?php
$json = '{"rows":[{"c":[{"v":"Date(1409052482000)"},{"v":22},{"v":22},{"v":22},{"v":null}]},
{"c":[{"v":"Date(1409052614000)"},{"v":22},{"v":22},{"v":22},{"v":null}]},
{"c":[{"v":"Date(1409052782000)"},{"v":22},{"v":22},{"v":22},{"v":null}]}
]}';
$tempdata = json_decode($json, true);
unset($tempdata['rows'][1]);
echo 'BEFORE:' . json_encode($tempdata);
$newvalue = array_values((array)$tempdata);
echo 'AFTER:' . json_encode($newvalue);
preferences:
33.13 ms | 402 KiB | 5 Q