Php's entire function (floor, ceil, round, intval)

Source: Internet
Author: User
Tags rounds

Floor roundingSyntax format: float floor (float value)

Returns the next integer not greater than value and rounds the decimal part of value. The return type of floor () is still float, because the float value range is usually larger than that of integer.

The code is as follows: Copy code

Echo floor (4.3); // 4
Echo floor (9.999); // 9


Ceil returns an integer in a single method.Syntax format: float ceil (float value)

Returns the next integer of no less than value. If the value has a decimal part, it is entered in one place. The type returned by ceil () is still float, because the float value range is usually larger than integer.

The code is as follows: Copy code
Echo ceil (4.3); // 5
Echo ceil (9.999); // 10

Round rounds the floating point number

Syntax: float round (float val [, int precision])

The code is as follows: Copy code

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


Intval --- convert a variable to an integer type

Example intval ()

The code is as follows: Copy code

<? Php

Echo intval (4.3); // 4

Echo intval (4.6); // 4

?>

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