php-8.0.30-src/Zend/tests/foreach_014.phpt

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