我有一个数据库中的数组,我想循环,并且item_id是相同的,添加数量(数量)以获得总数量。我已经尝试使用while循环进入内部数组,最大计数由count(外部数组)确定,这并没有给我一个期望的结果。
这是数组:
Array
(
[0] => Array
(
[id] => 8
[lpo_id] => 20
[invoice_no] => 1483958702
[external_invoice_no] => 1
[item_id] => 21
[qty] => 14
[currency] => USD
[price] => 1.31
[date] => 1483909200
[supplier_id] => 9
)
[1] => Array
(
[id] => 9
[lpo_id] => 20
[invoice_no] => 1483958702
[external_invoice_no] => 1
[item_id] => 22
[qty] => 15
[currency] => USD
[price] => 2.52
[date] => 1483909200
[supplier_id] => 9
)
)
这是数据库查询:
public function getSupplierInvoiceByRefNo($ourRef) {
$sql = "SELECT * FROM `{$this->_table_20}` WHERE `invoice_no` = '$ourRef'";
return $this->db->fetchAll($sql);
}
public function fetchAll($sql) {
$result = $this->query($sql);
$out = array();
while($row = mysqli_fetch_assoc($result)) {
$out[] = $row;
}
mysqli_free_result($result);
return $out;
}
数据库表:
id | lpo_id | invoice_no | external_invoice_no | item_id | qty | currency | price | date | supplier_id
所需的输出是具有下表,其中具有相同item_id的订单项具有总计数量并且在输出表中仅显示一次
item_id | qty | price | currency
答案 0 :(得分:3)
请尝试以下代码:
foreach($arrays as $a)
{
foreach ($a as $key => $value)
echo $key . '=' . $value;
}
祝你好运。
答案 1 :(得分:2)
我想你想要这样: -
<test
forcePluginActivation="true"
property="org.eclipse.wst.common.project.facet.core.projectFacet"
value="facet id"/>
注意: - 按$final_sum = array();
foreach ($array as $arr){
$final_sum[$arr['item_id']] += $arr['qty']];
}
echo "<pre/>";print_r($final_sum); // will give you an array of keys = item_id and values = sum of those id's quantities from original array
SUM()
进行查询,这将非常简单
答案 2 :(得分:2)
您可以尝试这样的事情
$data = array(
array('id'=>1,'item_id'=>2,'qty'=>13),
array('id'=>2,'item_id'=>3,'qty'=>16),
array('id'=>3,'item_id'=>2,'qty'=>33),
array('id'=>3,'item_id'=>3,'qty'=>43),
array('id'=>3,'item_id'=>4,'qty'=>30));
$new = array();
foreach($data as $value){
if($new[$value['item_id']]){
$new[$value['item_id']]+= $value[qty];
}else{
$new[$value['item_id']] = $value['qty'];
}
}echo "<pre>";print_r($new);
输出
Array
(
[2] => 46
[3] => 59
[4] => 30
)
答案 3 :(得分:2)
此查询应该产生您的目标
SELECT item_id, SUM(qty) as qty, price, currency
FROM `{$this->_table_20}`
WHERE `invoice_no` = '$ourRef'
GROUP BY item_id";