PHP processing amount (code example)

Code involving amount must be handled with caution. I happened to have a related function recently, so I’ll briefly talk about it below. [Recommended tutorial: php video tutorial]

PHP’s floating point numbers cannot be calculated accurately. You can read this article for details. Fortunately, amounts generally don't have too many decimal places. So when it comes to storage, in a nutshell, it is stored in units of minutes. In MySQL, just store it in int type (select the field type as appropriate).

Calculation:

It is mentioned above that storage is in cents, that is, 1 yuan is stored as 100 cents. You can use PHP's built-in BC Math series of functions for calculations. I will write another detailed explanation in the future.

Format amount

The following is an example of formatting amount

/**
* 格式化金额
* @param $price
* @return string
*/
public function formatPrice（$price）
{
if （！is_numeric（$price）） {
$price = 0;
}
return number_format（bcdiv（$price, 100, 2）， 2）；
}