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<?php
//define floating point number
$num = (2/3);

//round to integer
//result: 1
$roundNum = round($num);
echo $roundNum . "\n";

//round to 1 decimal place
//result: 0.7
$roundNum = round($num, 1);
echo $roundNum . "\n";

//round to 3 decimal places
//result: 0.667
$roundNum = round($num, 3);
echo $roundNum;
?>

The round( ) function rounds a number to a specified number of decimal places.Calling round( ) without the optional second argument will make it round into an integer value (0 decimal places). When rounding into an integer, the round( ) function will return the closest integer value. In order to force rounding to a lower or higher integer value, you can use the ceil( ) or floor( ) functions as following:

<?php
//define floating point numbers
$num = (1/3);

$r = round($num);
$c = ceil($num);
$f = floor($num);

//result: "0 1 0"
echo "$r $c $f"
?>