3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo round (2.56, 2, PHP_ROUND_HALF_DOWN); ?>
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
2.56
Output for 4.3.0 - 5.2.17
Notice: Use of undefined constant PHP_ROUND_HALF_DOWN - assumed 'PHP_ROUND_HALF_DOWN' in /in/ggJSN on line 2 Warning: Wrong parameter count for round() in /in/ggJSN on line 2