php二维数组去重

if (!$isPidArrKey) {
//降维去重
$temp = array();
foreach ($tmp as $k => $v) {
$v      = implode(',', $v);
$temp[] = $v;
}
$temp = array_unique($temp);
foreach ($temp as $k => $v) {
$temp[$k] = explode(",", $v);
}
$tmp = $temp;
}

$idsTmp = array();
$com    = new CacheCombusiness();
foreach ($proInfo as $key => $value) {
foreach ($comInfo as $k => $v) {
if ($value['cid'] == $k) {
// $value['cid'] = 24;
$comBusInfo = $com->getMore(array($value['cid']));
if (!empty($comBusInfo)) {
$value['qq'] = $comBusInfo[0]['contactArr']['qq'];
}
if (in_array($value['pid'], $idsTmp)) {
continue;
}
$idsTmp[] = $value['pid'];
if ($isPidArrKey) {
$tmp[$key] = array_merge($value, $v);
} else {
$tmp[] = array_merge($value, $v);
}
}
}
}