3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [0, 1, 2, 3]; foreach ($a as &$x) { foreach ($a as &$y) { echo "$x - $y\n"; } } }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Parse error: syntax error, unexpected '}', expecting end of file in /in/JSnPe on line 8
Process exited with code 255.

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