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<?php require_once 'db.php'; $qtny = $_POST['qtny']; $atnyqtny = $_POST['atnyqtny']; $orderItemSql = "SELECT id,name4 FROM p35 WHERE name = '$qtny'"; $orderItemResult = $db->query($orderItemSql); $orderResult = $db->query($orderItemSql); $orderData = $orderResult->fetch_array(); $nameqtny = $orderData[1]; $name4="+".$nameqtny. " months"; $row=date('Y-m-d', strtotime($name4, strtotime($atnyqtny))); $db->close(); echo json_encode($row);