PHP保留两位小数

  $number = 12.5896;
     
    //第一种：利用round()对浮点数进行四舍五入
    echo round($number,2); //12.59
     
    //第二种：利用sprintf格式化字符串
    $format_num = sprintf("%.2f",$number);
    echo $format_num; //12.59
     
    //第三种：利用千位分组来格式化数字的函数number_format()
    echo number_format($number, 2); //12.59
    //或者如下
    echo number_format($number, 2, '.', ''); //12.59

原文地址：https://www.codelovers.cn/article/20181010162002.html