3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = array(1,2,3,4); foreach($a AS &$y) { $y = $y*2; } unset($y); foreach($a AS $y) { echo $y.', '; } echo PHP_EOL, $y , PHP_EOL; foreach($a AS $x) { echo $x.', '; } echo PHP_EOL, $x , PHP_EOL;
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/eH1NY on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/eH1NY on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/eH1NY on line 4
Process exited with code 255.
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
2, 4, 6, 8, 8 2, 4, 6, 8, 8
Output for 5.0.0 - 5.0.1
2, 4, 6, 8, Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eH1NY on line 13 PHP_EOL8 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eH1NY on line 13 PHP_EOL2, 4, 6, 8, Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eH1NY on line 19 PHP_EOL8 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eH1NY on line 19 PHP_EOL
preferences:
34.66 ms | 1154 KiB | 17 Q