<?php
$fold=fopen("/sys/class/power_supply/BAT0/charge_now", "r");
$old=fread($fold, filesize("/sys/class/power_supply/BAT0/charge_now"));
fclose($fold);
$old=str_replace("\n", "", $old);
$vcil=time();

$pokracuj=1;
$poprve=1;

while($pokracuj):
$fnew=fopen("/sys/class/power_supply/BAT0/charge_now", "r");
$new=fread($fnew, filesize("/sys/class/power_supply/BAT0/charge_now"));
fclose($fnew);
$new=str_replace("\n", "", $new);

if($old == $new ) {
	sleep(1);
} else {

$poprve--;
if($poprve==0) {
$pokracuj=0;
$novycas=time(1);
$trvalo=$novycas-$vcil;
$rozdil=$old-$new;
echo "Jine: $old a $new | rozdil $rozdil | trvalo $trvalo ($novycas a $vcil)\n";
$cas=($new/$rozdil)*$trvalo;
}
}
endwhile;

echo "\nCas do vybiti: ".($cas)." sekund | ".($cas/60)." minut\n";
?>