这篇文章主要介绍了PHP把小数转成整数3种方法,实际上是使用的PHP自带的3个函数,分别是floor、ceil和round,需要的朋友可以参考下
float floor ( float value) 舍去法取整
返回不大于 value 的下一个整数,将 value 的小数部分舍去取整。floor() 返回的类型仍然是 float,因为float 值的范围通常比 integer 要大。
复制代码 代码如下:
echo floor(4.3); // 4
echo floor(9.999); // 9
float ceil ( float value) 进一法取整
返回不小于 value 的下一个整数,,value 如果有小数部分则进一位。ceil() 返回的类型仍然是 float,因为float 值的范围通常比 integer 要大。
复制代码 代码如下:
echo ceil(4.3); // 5
echo ceil(9.999); // 10
float round ( float val [, int precision]) 对浮点数进行四舍五入
返回将 val 根据指定精度 precision(十进制小数点后数字的数目)进行四舍五入的结果。precision 也可以是负数或零(默认值)。
复制代码 代码如下:
echo round(3.4); // 3
echo round(3.5); // 4
echo round(3.6); // 4
echo round(3.6, 0); // 4
echo round(1.95583, 2); // 1.96
echo round(1241757, -3); // 1242000
echo round(5.045, 2); // 5.04
echo round(5.055, 2); // 5.06

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