How to properly round numbers in PHP

super_round.php

<?php
/**
 * works around PHP's shitty floating point math to properly round numbers
 *
 * USE THIS EVERYWHERE BECAUSE FLOATS FUCKING SUCK
 */
function super_round($number, $precision = 0) {
	$power = bcpow(10, $precision);
	$rounded = round(bcmul($number, $power, 1), 0);
	return bcdiv($rounded, $power, $precision);
}