3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = array(2, 3); $arr = array(&$a, &$b[0], &$b[1]); $arr[1]++; $arr[0]+++; echo $a; echo implode($b); ?>
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.19, 5.5.0 - 5.5.3
Parse error: syntax error, unexpected ';' in /in/o4UQB on line 6
Process exited with code 255.
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182.85 ms | 1395 KiB | 59 Q