- var_dump: documentation ( source)
<?php
$width = 2034;
$height = 847;
bcscale(5);
$ratio = bcdiv(bcdiv(500, bcdiv($width, 100)) , 100);
var_dump($ratio);
$newWidth = bcmul($width, $ratio);
$newHeight = bcmul($height, $ratio);
var_dump($newWidth);
var_dump($newHeight);