3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $data = array( 8 => 2, 4 => 4, 7 => 6, ); foreach($data as $key => $val) { echo $key.' : '.$val."\n"; } echo $data[0]; print_r($data);
based on CAL61
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
8 : 2 4 : 4 7 : 6 Notice: Undefined offset: 0 in /in/ZLcs3 on line 13 Array ( [8] => 2 [4] => 4 [7] => 6 )
Output for hhvm-3.10.0 - 3.12.0
8 : 2 4 : 4 7 : 6 Notice: Undefined index: 0 in /in/ZLcs3 on line 13 Array ( [8] => 2 [4] => 4 [7] => 6 )
Output for 4.3.0 - 5.2.17
8 : 2 4 : 4 7 : 6 Notice: Undefined offset: 0 in /in/ZLcs3 on line 13 Array ( [8] => 2 [4] => 4 [7] => 6 )