- var_dump: documentation ( source)
<?php
$lat = 48.274996066466;
$lng = 14.246049094945;
$intr = 0;
$boost = array(0,1,4,5,16,17,20,21,64,65,68,69,80,81,84,85);
for ($i=0; $i<8; $i++) {
var_dump($intr<<8);
$intr = ($intr<<8) + ($boost[($lng>>(28-$i*4))%16]<<1) + $boost[($lat>>(28-$i*4))%16];
//var_dump($i . " > " . $intr);
}