Online PHP editor | output for bHc59

<?php $a = strtotime("now"); $b = strtotime("+0"); $a0 = strtotime("now+0"); $a1 = strtotime("now+1"); $a2 = strtotime("now+2"); $a22 = strtotime("now + 2"); $aday = strtotime("now+86400"); $aday2 = strtotime("now + 86400"); echo "a: "; echo $a; echo " (" . date("c", $a) . ")"; echo "\na-b: "; echo $a-$b; echo "\na-a0: "; echo $a-$a0; echo "\na-a1: "; echo $a-$a1; echo "\na-a2: "; echo $a-$a2; echo "\na-a22: "; echo $a-$a22; echo "\na-aday: "; echo $a-$aday; echo " // $a - $aday (" . date("c", $a-$aday) . ")"; echo "\na-aday2: "; echo $a-$aday2; echo " // $a - $aday2 (" . date("c", $a-$aday2) . ")";