1--TEST--
2References are not counted twice
3--FILE--
4<?php
5
6$ref1 = 1;
7$ref2 = 2;
8
9$arr = [&$ref1, &$ref1, &$ref2, &$ref2];
10var_dump(serialize($arr));
11
12?>
13--EXPECT--
14string(38) "a:4:{i:0;i:1;i:1;R:2;i:2;i:2;i:3;R:3;}"
15