3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php for ($i = 1; $i <= 31; $i++) { if ($i < 10){ $day = '0'.$i; if( ($i+1) < 10 ) $next_day = '0'.($i+1); else $next_day=$i; } else{ $day = $i; $next_day = ($i+1); } }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0