Home > Backend Development > PHP Tutorial > 解析php取整的几种方式_PHP

解析php取整的几种方式_PHP

WBOY
Release: 2016-06-01 12:05:44
Original
821 people have browsed it
floor 舍去法取整 语法格式:float floor ( float value )
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。
echo floor(4.3);   // 4
echo floor(9.999); // 9

ceil 进一法取整 语法格式: float ceil ( float value )
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
echo ceil(4.3);    // 5
echo ceil(9.999);  // 10

round 对浮点数进行四舍五入
语法:float round ( float val [, int precision] )
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);    // 5.05
echo round(5.055, 2);    // 5.06
Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template