<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">&lt;?php
$a = [1,2];
var_dump($a);

foreach ($a as &amp;$val) {}
var_dump($a);

$b = [3];
foreach ($b as $val) {}
var_dump($a);
?&gt;</pre></body></html>