php-8.0.30-src/Zend/tests/foreach_016.phpt

--TEST--
array_unshift() function precerve foreach by reference iterator pointer
--FILE--
<?php
$a = [1,2,3];
foreach($a as &$v) {
    echo "$v\n";
    if ($v == 2) {
        array_unshift($a, 0, 0, 0, 0, 0, 0, 0, 0);
    }
}
var_dump(count($a));
?>
--EXPECT--
1
2
3
int(11)