PHP Take the whole function: Ceil,floor,round,intval difference Introduction

The following is the PHP to take the whole function: the difference between the ceil,floor,round,intval is described in detail, the need for friends can come to the reference

We often use the PHP to take the whole function, mainly: Ceil,floor,round,intval.

Ceil--into a method to take the whole
Description
float ceil (float value)

Returns the next integer not less than value, in which value is entered if there is a fractional part. The type returned by Ceil () is still float, because the range of float values is usually larger than the integer.

PHP takes an integer function Example 1. Ceil () example

< php echo ceil (4.3); 5 echo ceil (9.999); Ten?>

Floor--The Rounding method
Description
Float floor (float value)

Returns the next integer not less than value, rounding out the fractional part of value. The type returned by floor () is still float, because the range of float values is usually larger than the integer.

PHP takes an integer function Example 1. Floor () example

< php echo floor (4.3); 4 echo Floor (9.999); 9?>

Round--Rounding a floating-point number
Description

Float round (float val [, int precision])

Returns the result of rounding Val based on the specified precision precision (number of digits after decimal point). Precision can also be negative or 0 (the default value).

PHP takes an integer function Example 1. Round () example

< PHP 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?>

Intval---to integer patterns of variables
PHP Rounding Function Example intval ()

< php echo intval (4.3); 4 echo intval (4.6); 4?>

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