Description:
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When MySQL connection_id goes larger then 2**31, Mysqli::thread_id just return the wrong value.


tested version

PHP 5.5.7 on Gentoo Linux x86_64
PHP 5.2.14 on RHEL 5.5 x86_64

Test script:
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<?php

$mysql = new Mysqli('127.0.0.1', 'batchjob', 'aN2jU3ke', 'anjuke_db');

$_id = $mysql->thread_id;

var_dump($_id);

$sql = 'select connection_id()';

$res = $mysql->query($sql);

var_dump($res->fetch_row()[0]);

sleep(30);

$mysql->close();


Expected result:
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result of Mysqli::thread_id is the same as result of `select connection_id()` statement.

Actual result:
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Mysqli::thread_id: 2804557258
select connection_id(): 11394491850