xref: /PHP-8.1/Zend/tests/gh11222.phpt (revision 975d28e2)
1--TEST--
2GH-112222: foreach by-ref may jump over keys during a rehash
3--FILE--
4<?php
5
6// Not packed
7$a = ["k" => 0, 1 => 1, 2, 3, 4, 5, 6];
8foreach ($a as $k => &$v) {
9    if ($k == 1) {
10        // force that it'll be rehashed by adding enough holes
11        unset($a[4], $a[5]);
12        // actually make the array larger than 8 elements to trigger rehash
13        $a[] = 8; $a[] = 9; $a[] = 10;
14
15    }
16    // observe the iteration jumping from key 1 to key 6, skipping keys 2 and 3
17    echo "$k => $v\n";
18}
19
20?>
21--EXPECTF--
22k => 0
231 => 1
242 => 2
253 => 3
266 => 6
277 => 8
288 => 9
299 => 10
30