# mysqli_debug

# mysqli->debug()

(PHP 5)

mysqli->debug() — Performs debugging operations

### Description

Procedural style:

bool mysqli_debug ( string `$message` )

Object oriented style (method):

mysqli
bool 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()