3v4l.org

run code in 300+ PHP versions simultaneously
<?php print ' - '; $i = mktime(0,0,0,10,14,2013); $f = mktime(0,0,0,10,28,2013); print ($f - $i); print ' - '; print floor(($f - $i)/86400); print ' - ';

preferences:
33.41 ms | 402 KiB | 5 Q