Question

我的控制器中有数组，其输出是这样的

{
  "usia": 0.01761252446184,
  "wife_education": 0.078277886497065,
  "husband_education": 0.0058708414872798,
  "number_of_children": 0.17025440313112,
  "wife_religion": 0.86497064579256,
  "wife_now_working": 0.078277886497065,
  "husband_occupation": 0.23874755381605,
  "living_index": 0.078277886497065,
  "media_exposure": 0.048923679060665
 }

我想将数组的每个元素相乘，例如

（美国*妻子教育*丈夫教育*子女数* 老婆宗教*老婆现在工作*老公职业*生活指数* media_exposure）

Answer 1

PHP foreach：http://php.net/manual/en/control-structures.foreach.php

$items = [];

foreach ($items as $item) {
    // do calculation here
}

Answer 2

将数据放入字符串并以JSON解码：

$data = '{  
    "usia": 0.01761252446184,  
    "wife_education": 0.078277886497065,  
    "husband_education": 0.0058708414872798,  
    "number_of_children": 0.17025440313112,  
    "wife_religion": 0.86497064579256,  
    "wife_now_working": 0.078277886497065,  
    "husband_occupation": 0.23874755381605,  
    "living_index": 0.078277886497065,  
    "media_exposure": 0.048923679060665  
}';


$data = json_decode($data, true);

然后遍历$data以进行乘法运算：

$product = 1;
foreach ($data as $key => $value) {
    $product *= $value;
}

如何使用laravel将数组中的所有项目相乘？

2 个答案: