Performs debugging operations mysqli::__construct mysqli::dump_debug_info MySQLi PHP Manual mysqli::debug mysqli_debug (PHP 5)mysqli::debug -- mysqli_debug — Performs debugging operations Description Object oriented style (method): bool mysqli::debug ( string $message ) Procedural style: bool mysqli_debug ( string $message ) Performs debugging operations using the Fred Fish debugging library. Parameters message A string representing the debugging operation to perform Return Values Returns TRUE. Notes Note: To use the mysqli_debug() function you must complile the MySQL client library to support debugging. Examples Example #1 Generating a Trace File <?php/* Create a trace file in '/tmp/client.trace' on the local (client) machine: */mysqli_debug("d:t:0,/tmp/client.trace");?> See Also mysqli_dump_debug_info() mysqli_report() mysqli::__construct mysqli::dump_debug_info MySQLi PHP Manual