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]++ to 2 ; echo $a; echo implode($b); ?>
Output for 5.4.0 - 5.4.19
Parse error: syntax error, unexpected 'to' (T_STRING) in /in/YpEbN on line 6
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_STRING in /in/YpEbN on line 6
Process exited with code 255.
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185.22 ms | 1395 KiB | 55 Q