3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array(1,2,3); foreach($a AS &$y) { $y = $y*2; } echo $y , PHP_EOL; foreach($a AS $y) { echo $y.', '; } echo PHP_EOL, $y , PHP_EOL; foreach($a AS $x) { echo $x.', '; } echo PHP_EOL, $x , PHP_EOL;
based on Srh3B
Output for 5.0.2 - 7.1.0, 7.1.6 - 7.2.6
6 2, 4, 4, 4 2, 4, 4, 4
Output for 7.1.5

Process exited with code 137.
Output for 5.0.0 - 5.0.1
6 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/CCadi on line 9 PHP_EOL2, 4, 4, Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/CCadi on line 14 PHP_EOL4 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/CCadi on line 14 PHP_EOL2, 4, 4, Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/CCadi on line 20 PHP_EOL4 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/CCadi on line 20 PHP_EOL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/CCadi on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/CCadi on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/CCadi on line 5
Process exited with code 255.