There are 3 different diffs reported by users for this test.
Count
Diff
45 (96%)
011+ float(2.59999990463)
011- float(2.6)
1 (2%)
001+ Warning: mysqli_real_connect(): Headers and client library minor version mismatch. Headers:50173 Library:50621 in /usr/local/src/php-5.6.3/ext/mysqli/tests/connect.inc on line 94