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PHP Math Reference : Round numbers
The round() function rounds a floating-point number.
Parameter | Description |
---|---|
number | Required. Specifies the value to round |
precision | Optional. Specifies the number of decimal digits to round to. Default is 0 |
mode | Optional. Specifies a constant to specify the rounding mode:
|
Return Value: | The rounded value |
---|---|
Return Type: | Float |
PHP Version: | 4+ |
PHP Changelog: | PHP 5.3: The mode parameter was added |
Round numbers to two decimals:
<?php
echo(round(4.96754,2) . "<br>");
echo(round(7.045,2) . "<br>");
echo(round(7.055,2));
?>
Round numbers using the constants:
<?php
echo(round(1.5,0,PHP_ROUND_HALF_UP) . "<br>");
echo(round(-1.5,0,PHP_ROUND_HALF_UP) . "<br>");
echo(round(1.5,0,PHP_ROUND_HALF_DOWN) . "<br>");
echo(round(-1.5,0,PHP_ROUND_HALF_DOWN) . "<br>");
echo(round(1.5,0,PHP_ROUND_HALF_EVEN) . "<br>");
echo(round(-1.5,0,PHP_ROUND_HALF_EVEN) . "<br>");
echo(round(1.5,0,PHP_ROUND_HALF_ODD) . "<br>");
echo(round(-1.5,0,PHP_ROUND_HALF_ODD));
?>
❮ PHP Math Reference