3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($i=1;$i<1001;$i*=10) { $starttime=round( microtime(TRUE)*$i); $now= shortenb64($starttime); $len=strlen($now); $min= str_repeat("0", $len); $max= str_repeat("z", $len); $nowtime=date("Y-m-d H:i:s", $nowS=epxandb64($now)/$i); $minS=epxandb64($min)/$i; $maxS=epxandb64($max)/$i; $minYear = 1970+($minS/ (60*60*24*365.25)); $maxYear = 1970+($maxS/ (60*60*24*365.25)); echo "$i $starttime --- $now ($nowtime): --- min year ($minYear) --- max year ($maxYear)"; } function shortenb64($id, $alphabet='-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz') { $base = strlen($alphabet); $short = ''; while($id) { $id = round(($id-($r=$id%$base))/$base); $short = $alphabet{$r} . $short; } return $short; } function epxandb64($id, $alphabet='-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz') { $base = strlen($alphabet); $len = strlen($id)-1; $long = 0.0; $mul=1; for($i=$len;$i>=0;$i--) { $long += strpos($alphabet, substr($id, $i,1))*$mul; $mul *= $base; } return $long; }

preferences:
33.17 ms | 402 KiB | 5 Q