mysqli::debug
mysqli_debug
(PHP 5, PHP 7, PHP 8)
mysqli::debug -- mysqli_debug — Performs debugging operations
Beschreibung
Objektorientierter Stil
$options
): boolProzeduraler Stil
$options
): boolPerforms debugging operations using the Fred Fish debugging library.
Parameter-Liste
-
options
-
A string representing the debugging operation to perform
The debug control string is a sequence of colon separated fields as follows:
Each field consists of a mandatory flag character followed by an optional<field_1>:<field_2>:<field_N>
,
and comma separated list of modifiers:flag[,modifier,modifier,...,modifier]
Recognized Flag Characters option
characterDescription O MYSQLND_DEBUG_FLUSH
A/a MYSQLND_DEBUG_APPEND
F MYSQLND_DEBUG_DUMP_FILE
i MYSQLND_DEBUG_DUMP_PID
L MYSQLND_DEBUG_DUMP_LINE
m MYSQLND_DEBUG_TRACE_MEMORY_CALLS
n MYSQLND_DEBUG_DUMP_LEVEL
o output to file T MYSQLND_DEBUG_DUMP_TIME
t MYSQLND_DEBUG_DUMP_TRACE
x MYSQLND_DEBUG_PROFILE_CALLS
Rückgabewerte
Returns true
.
Beispiele
Beispiel #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");
?>
Anmerkungen
Hinweis:
To use the mysqli_debug() function you must compile the MySQL client library to support debugging.
Siehe auch
- mysqli_dump_debug_info() - Dump debugging information into the log
- mysqli_report() - Alias von mysqli_driver->report_mode