我正在为客户开发一个系统，该系统会创建一个包装标签的 csv，并将其发送到打印机。客户有六个不同的项目。客户从我的客户那里批量订购产品。两个项目（产品 A 和产品 B）共享同一条包装线。为了提高包装效率，我的客户希望先在包装产品 A 和包装产品 B 之间交替进行。
例如，如果 John、Sally 和 James 都订购了这两种产品，则系统需要将 John 的订单以产品 A 开头写入 csv，Sally 的订单以产品 B 开头，James 的订单再次以产品 A 开头。
我在下面粘贴了我的非工作代码，但这真的让我很头疼，而且我真的很难过。
foreach($orders as $order) {
$name = null;
$phone = null;
$account = DAO_ContactPerson::get($order->account_id);
$delivery = false;
if($account->is_agency) {
$name = $order->getAttribute('name');
$phone = $order->getAttribute('phone');
} else {
$name = sprintf("%s %s",
$account->getPrimaryAddress()->first_name,
$account->getPrimaryAddress()->last_name
);
$phone = $account->phone;
}
$name = trim($name);
$phone = trim($phone);
$items = $order->getItems();
if($order->getAttribute('delivery')) {
$type = 'deliveries';
$destination = 'Delivery';
$address = sprintf("%s %s %s",
$order->getAttribute('delivery_address.line1'),
$order->getAttribute('delivery_address.line2'),
$order->getAttribute('delivery_address.postal')
);
} else {
$type = 'pickups';
$agency = DAO_ContactPerson::getAgency($order->getAttribute('pickup'));
$destination = $agency->name;
// Override account id so orders are grouped by agency
$order->account_id = $agency->id;
$address = null;
}
// var_dump($order->id);
// Init account array
if(!isset($rows[$type][$order->account_id]))
$rows[$type][$order->account_id] = array('combined' => array(), 'separate' => array());
foreach($items as $item) {
$packing = 'separated';
if($item->product_id == 3 || $item->product_id == 4)
$packing = 'combined';
if(!isset($rows[$type][$order->account_id][$packing][$item->product_id]))
$rows[$type][$order->account_id][$packing][$item->product_id] = array();
$i = 0;
while($i < $item->quantity) {
$rows[$type][$order->account_id][$packing][$item->product_id][] = array(
'number' => $order->id,
'destination' => $destination,
'size' => $item->product_id,
'name' => $name,
'address' => $address,
'phone' => $phone
);
$i++;
}
}
// if($order->id == 176) {
// var_dump($rows[$type][$order->account_id][$packing]);
// }
}
$this->weight = 1;
$pickups = count($rows['pickups']);
for($i = 0; $i < $pickups; $i++) {
$account =& $rows['pickups'][$i];
$account['output'] = array();
if(isset($account['combined'])) {
$combined_products =& $account['combined'];
if(!empty($combined_products)) {
foreach($combined_products as $prod_id => $combined) {
usort($combined_products[$prod_id], array($this, "_compareBoxes"));
}
// Flip weights once we finish with this account
$last_box = end($combined_products);
$last_box = array_pop($last_box);
reset($combined_products);
if($this->weight == 1) {
$this->weight = -1;
if($last_box['size'] == 3) {
asort($combined_products);
}
} else {
if($last_box['size'] == 4) {
arsort($combined_products);
}
$this->weight = 1;
}
foreach($combined_products as $combined) {
$account['output'][] = $combined;
}
foreach($account['separated'] as $separate) {
$account['output'][] = $separate;
}
}
} else {
if(isset($account['separated']))
$account['output'] = $account['separated'];
}
}
$deliveries = count($rows['deliveries']);
for($i = 0; $i < $deliveries; $i++) {
$account =& $rows['deliveries'][$i];
$account['output'] = array();
if(isset($account['combined'])) {
$combined_products =& $account['combined'];
if(!empty($combined_products)) {
foreach($combined_products as $prod_id => $combined) {
usort($combined_products[$prod_id], array($this, "_compareBoxes"));
}
// Flip weights once we finish with this account
$last_box = end($combined_products);
$last_box = array_pop($last_box);
reset($combined_products);
if($this->weight == 1) {
$this->weight = -1;
if($last_box['size'] == 3) {
asort($combined_products);
}
} else {
if($last_box['size'] == 4) {
arsort($combined_products);
}
$this->weight = 1;
}
foreach($combined_products as $combined) {
$account['output'][] = $combined;
}
foreach($account['separated'] as $separate) {
$account['output'][] = $separate;
}
}
} else {
if(isset($account['separated']))
$account['output'] = $account['separated'];
}
}
$rows['output'] = $rows['pickups'];
array_push($rows['output'], $rows['deliveries']);
$output = '';
foreach($rows['output'] as $account_id => $boxes) {
if(!empty($boxes['output'])) {
foreach($boxes['output'] as $labels) {
if(!empty($labels)) {
foreach($labels as $label) {
$output .= implode(',', $label) . "<br>";
}
}
}
}
}
_compareBoxes 方法如下所示：
private function _compareBoxes($a, $b) {
if($a['size'] == $b['size']) {
return 0;
}
if($this->weight == 1) {
// Medium first, then Large
return ($a['size'] < $b['size']) ? -1 : 1;
}
if($this->weight == -1) {
// Large first, then Medium
return ($a['size'] > $b['size']) ? -1 : 1;
}
}