3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = 1; for ($i = 0; $i <= 100; $i++) { list($a, $b) = $b, $a + $b; echo $b . PHP_EOL; }
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.17
Parse error: syntax error, unexpected ',' in /in/hcuf5 on line 4
Process exited with code 255.
preferences:
174.31 ms | 1395 KiB | 53 Q