Description:
------------
---
From manual page: https://php.net/function.curl-copy-handle
---

When I use PHP >= 7.0

curl_copy_handle() memory leak

But, when I use PHP <= 5.6 it's OK!


Test script:
---------------
<?php
for($i = 0; $i < 5; ++$i)
{
    $c1 = curl_init();
    $c2 = curl_copy_handle($c1);
    curl_close($c2);
    curl_close($c1);
    var_dump(memory_get_usage());
}
var_dump(PHP_VERSION);


Expected result:
----------------
int(120784)
int(120824)
int(120824)
int(120824)
int(120824)
string(6) "5.6.27"

Actual result:
--------------
int(869760)
int(869816)
int(870160)
int(870184)
int(870208)
string(23) "7.2.19-0ubuntu0.18.04.1"