zendstudio 声明变量类型，让变量自动方法提示

$out = [];
/* @var $row \xxyy\SizeEntity */
foreach ($rows[ 'list'] as $row) {
$out[ 'list'][] = [
'width'                 => $row->getWidth(),
'height'                => $row->getHeight(),
];
}

$out = [];
/* @var $invoice ChargeInvoice */
foreach ($response->getChargeInvoice() as $invoice) {
$tmp = [];
$tmp[ 'amount'] = $invoice->getChargeAmountMicros();
$tmp[ 'charge_id'] = $invoice->getChargeId();
$tmp[ 'date'] = date( 'Y-m-d', $invoice->getChargeEndTimeUtc());
$out[] = $tmp;
}