php - 在Laravel图表上显示2个小数点

我想为我在控制器中声明的每个变量显示2个小数点

private $dailyCapital=0;
private $dailySale=0;
private $dailyProfit;

所以我尝试在每个$this前面加倍

(double)$this->dailySale += (double)$sale->price;
(double)$this->dailyCapital += (double)($item->buying_price * $sale->quantity);
(double)$this->dailyProfit = (double)$this->dailySale - (double)$this->dailyCapital;

将其发送到view之后，

->dataset('Sales by Day', 'doughnut', [$this->dailyCapital, $this->dailySale, $this->dailyProfit])

这三个都不返回小数点后两位。

最佳答案

您应该使用number_format()：

(double)$this->dailySale = number_format((double)$sale->price, 2, '.', '');
(double)$this->dailyCapital = number_format((double)($item->buying_price * $sale->quantity), 2, '.', '');
(double)$this->dailyProfit = number_format((double)$this->dailySale - (double)$this->dailyCapital, 2, '.', '');

另外，除非在声明后为$this->dailySale，$this->dailyCapital等变量分配了数值，否则应使用=而不是+=，因为没有初始数值可为其添加一些值。

关于php - 在Laravel图表上显示2个小数点，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/59025083/