3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $POST['topdiameter'] = array( 'first value', 'second value' ); $POST['bottomdiameter'] = array( 'first value', 'second value' ); print_r($POST[0]); ?>
Output for 5.3.0 - 7.2.6
Notice: Undefined offset: 0 in /in/gg0l1 on line 5
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 0 in /in/gg0l1 on line 5