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syslog
(PHP 4, PHP 5)
syslog — Generate a system log message
Описание
bool syslog ( int $priority , string $message )
syslog() generates a log message that will be distributed by the system logger.
For information on setting up a user defined log handler, see the syslog.conf (5) Unix manual page. More information on the syslog facilities and option can be found in the man pages for syslog (3) on Unix machines.
Список параметров
- priority
-
priority is a combination of the facility and the level. Possible values are:
syslog() Priorities (in descending order) Constant Description LOG_EMERG system is unusable LOG_ALERT action must be taken immediately LOG_CRIT critical conditions LOG_ERR error conditions LOG_WARNING warning conditions LOG_NOTICE normal, but significant, condition LOG_INFO informational message LOG_DEBUG debug-level message - message
-
The message to send, except that the two characters %m will be replaced by the error message string (strerror) corresponding to the present value of errno.
Возвращаемые значения
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Примеры
Пример #1 Using syslog()
<?php
define_syslog_variables();
// open syslog, include the process ID and also send
// the log to standard error, and use a user defined
// logging mechanism
openlog("myScriptLog", LOG_PID | LOG_PERROR, LOG_LOCAL0);
// some code
if (authorized_client()) {
// do something
} else {
// unauthorized client!
// log the attempt
$access = date("Y/m/d H:i:s");
syslog(LOG_WARNING, "Unauthorized client: $access {$_SERVER['REMOTE_ADDR']} ({$_SERVER['HTTP_USER_AGENT']})");
}
closelog();
?>
Примечания
On Windows NT, the syslog service is emulated using the Event Log.
Замечание: Use of LOG_LOCAL0 through LOG_LOCAL7 for the facility parameter of openlog() is not available in Windows.
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