PHP ��U
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# round

(PHP 3, PHP 4, PHP 5)

round -- Rounds a float

## Description

float round ( float val [, int precision] )

Returns the rounded value of val to specified precision (number of digits after the decimal point). precision can also be negative or zero (default).

範例 1. round() examples

`<?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 ?>`

> 注: PHP doesn't handle strings like "12,300.2" correctly by default. See converting from strings.

> 注: The precision parameter was introduced in PHP 4.

See also: ceil(), floor(), and number_format().

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