There is an issue when we are using PHP 5.3 in AMPPS 2.1 (Mac OSX version). The package uses MySQL 5.6, however it seems PHP 5.3 may be compiled against MySQL 5.5 header. This gives warning when testing out the application such as SugarCRM, dotproject and many others. This should be updated correctly. Thanks.
Excerpt of PHPInfo mysqli Client API library version 5.6.13
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Client API header version 5.5.29
MYSQLI_SOCKET /Applications/AMPPS/mysql/tmp/mysql.sock