3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3); foreach (&$a as $b) { if ($b%2) $b++; } var_dump($a);
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Parse error: syntax error, unexpected '&' in /in/bkvJp on line 4
Process exited with code 255.

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194.87 ms | 1395 KiB | 66 Q