(PHP 5)
mysqli::debug -- mysqli_debug — Performs debugging operations
面向对象风格
过程化风格
Performs debugging operations using the Fred Fish debugging library.
A string representing the debugging operation to perform
Returns TRUE.
Note:
To use the mysqli_debug() function you must compile the MySQL client library to support debugging.
Example #1 Generating a Trace File
<?php
/* Create a trace file in '/tmp/client.trace' on the local (client) machine: */
mysqli_debug("d:t:o,/tmp/client.trace");
?>