mysqli::debug
mysqli_debug
(PHP 5, PHP 7, PHP 8)
mysqli::debug -- mysqli_debug — Performs debugging operations
Description
Object-oriented style
$options): boolProcedural style
$options): boolPerforms debugging operations using the Fred Fish debugging library.
Parameters
-
options -
A string representing the debugging operation to perform
The debug control string is a sequence of colon separated fields as follows:
<field_1>:<field_2>:<field_N>
,and comma separated list of modifiers:flag[,modifier,modifier,...,modifier]Recognized Flag Characters optioncharacterDescription O MYSQLND_DEBUG_FLUSHA/a MYSQLND_DEBUG_APPENDF MYSQLND_DEBUG_DUMP_FILEi MYSQLND_DEBUG_DUMP_PIDL MYSQLND_DEBUG_DUMP_LINEm MYSQLND_DEBUG_TRACE_MEMORY_CALLSn MYSQLND_DEBUG_DUMP_LEVELo output to file T MYSQLND_DEBUG_DUMP_TIMEt MYSQLND_DEBUG_DUMP_TRACEx MYSQLND_DEBUG_PROFILE_CALLS
Return Values
Returns true.
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:o,/tmp/client.trace");
?>
Notes
Note:
To use the mysqli_debug() function you must compile the MySQL client library to support debugging.
See Also
- mysqli_dump_debug_info() - Dump debugging information into the log
- mysqli_report() - Alias of mysqli_driver->report_mode
