php 二维数组求和

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解决时间 2021-01-31 01:57

提问者情癌晚期

2021-01-30 01:47

Array

(

[194] => Array

(

[id] => 194

[pos_id] => 0

[user_id] => 4

[site_id] => 3

[e_ticket_type] => diancard

[consume] => 84.00

[balance] => 0.00

[type_num] => 9

[e_ticket_id] => 35

[e_ticket_sn] => 62000000

[logs_time] => 1322082448

[cancel_time] => 0

[serial_number] => 000000

[batch] => 000000

[koudian] => 84.00

[settlement] => 1.00

[logs_status] => 1

[order_sn] => 1132748231

[brand_id] => 394

[site_name] => 中国票务网

[password] => 7694f4a66316e53c8cdd9d9954bd611d

[money] => 30

[reg_time] => 0

[last_time] => 1320103897

[last_login] => 1323277125

[last_ip] => 127.0.0.1

[logins] => 44

[ticket_type] => 自由扣点

[xiaoji] => 84

)

[193] => Array

(

[id] => 193

[pos_id] => 0

[user_id] => 4

[site_id] => 3

[e_ticket_type] => diancard

[consume] => 216.00

[balance] => 84.00

[type_num] => 9

[e_ticket_id] => 35

[e_ticket_sn] => 62000000

[logs_time] => 1322082426

[cancel_time] => 0

[serial_number] => 000000

[batch] => 000000

[koudian] => 216.00

[settlement] => 1.00

[logs_status] => 1

[order_sn] => 1132780195

[brand_id] => 394

[site_name] => 中国票务网

[password] => 7694f4a66316e53c8cdd9d9954bd611d

[money] => 30

[reg_time] => 0

[last_time] => 1320103897

[last_login] => 1323277125

[last_ip] => 127.0.0.1

[logins] => 44

[ticket_type] => 自由扣点

[xiaoji] => 216

)

)

这样一个二维数组[xiaoji]是字段[consume]和[settlement]的乘积$val['consume'] * $val['settlement'], [xiaoji]没有存到数据库,我想求所有[xiaoji]的总和并显示在页面上该怎么写？

最佳答案

二级知识专家試著忘記壹切

2021-01-30 02:55

你这个二位数组里面不是有这个[xiaoji]

那么就foreach一下

$sum = 0;

foreach ($array as $key => $value ){

$sum += $array[$key]['xiaoji'];

}

echo $sum;

这里$array是你的数组的名字，$sum是全部[xiaoji]的和。

如果没有这个你可以

$sum = 0;

foreach ($array as $key => $value ){

$sum += $array[$key]['consume'] * $array[$key]['settlement'];

}

echo $sum;

同样 这里$array是你的数组的名字，$sum是全部['consume'] * ['settlement']的和。

如果是直接读数据库

SELECt SUM( `consume` * `settlement`) as sum FROM your_table

your_table是你的数据表的名字 直接查询出来的就是全部['consume'] * ['settlement']的总和。

不知道你问的是不是这个意思？

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