3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(1,2,3,4,5); foreach($arr as $key => &$row) { echo key($arr), '=>', current($arr), "\r\n"; next($arr); } echo key($arr), '=>', current($arr), "\r\n";
Output for 5.0.0 - 5.2.1, 7.0.0 - 7.1.0
0=>1 1=>2 2=>3 3=>4 4=>5 =>
Output for 5.2.2 - 5.6.28, hhvm-3.10.0 - 3.12.0
1=>2 2=>3 3=>4 4=>5 => =>
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/QC4I5 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/QC4I5 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/QC4I5 on line 4
Process exited with code 255.