3v4l.org

run code in 150+ php & hhvm versions
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<?php $n = 1234; $m = 0; while ($n > 0) { $m = ($m * 10) + ($n % 10); $n = $n / 10; } var_dump($m); ?>
Output for 4.3.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
float(INF)
Output for 4.3.3

Process exited with code 137.
Output for 4.3.0 - 4.3.2
float(0.E+79)