define_syslog_variables()

(PHP 4, PHP 5 < 5.4.0)

Initializes all syslog related variables

说明

define_syslog_variables(void): void

Initializes all variables used in the syslog functions.

返回值

没有返回值。

**Syslog variables**
Variable	Constant equal	Meaning	Notes
`$LOG_EMERG`	`LOG_EMERG`	System is unusable
`$LOG_ALERT`	`LOG_ALERT`	Immediate action required
`$LOG_CRIT`	`LOG_CRIT`	Critical conditions
`$LOG_ERR`	`LOG_ERR`
`$LOG_WARNING`	`LOG_WARNING`
`$LOG_NOTICE`	`LOG_NOTICE`
`$LOG_INFO`	`LOG_INFO`
`$LOG_DEBUG`	`LOG_DEBUG`
`$LOG_KERN`	`LOG_KERN`
`$LOG_USER`	`LOG_USER`	Genetic user level
`$LOG_MAIL`	`LOG_MAIL`	Log to email
`$LOG_DAEMON`	`LOG_DAEMON`	Other system daemons
`$LOG_AUTH`	`LOG_AUTH`
`$LOG_SYSLOG`	`LOG_SYSLOG`		Not available on Netware
`$LOG_LPR`	`LOG_LPR`
`$LOG_NEWS`	`LOG_NEWS`	Usenet new	Not available on HP-UX
`$LOG_CRON`	`LOG_CRON`		Not available on all platforms
`$LOG_AUTHPRIV`	`LOG_AUTHPRIV`		Not available on AIX
`$LOG_LOCAL0`	`LOG_LOCAL0`		Not available on Windows and Netware
`$LOG_LOCAL1`	`LOG_LOCAL1`		Not available on Windows and Netware
`$LOG_LOCAL2`	`LOG_LOCAL2`		Not available on Windows and Netware
`$LOG_LOCAL3`	`LOG_LOCAL3`		Not available on Windows and Netware
`$LOG_LOCAL4`	`LOG_LOCAL4`		Not available on Windows and Netware
`$LOG_LOCAL5`	`LOG_LOCAL5`		Not available on Windows and Netware
`$LOG_LOCAL6`	`LOG_LOCAL6`		Not available on Windows and Netware
`$LOG_LOCAL7`	`LOG_LOCAL7`		Not available on Windows and Netware
`$LOG_PID`	`LOG_PID`
`$LOG_CONS`	`LOG_CONS`
`$LOG_ODELAY`	`LOG_ODELAY`
`$LOG_NDELAY`	`LOG_NDELAY`
`$LOG_NOWAIT`	`LOG_NOWAIT`		Not available on BeOS
`$LOG_PERROR`	`LOG_PERROR`		Not available on AIX

Warning
本函数已自 PHP 5.3.0 起废弃并将自PHP 5.4.0 起移除。

范例

Example #1define_syslog_variables()example

<?php
// Check if syslog variables already is defined
if(!get_cfg_var('define_syslog_variables'))
{
    define_syslog_variables();
}
// Open the log
openlog('', $LOG_ODELAY, $LOG_MAIL | $LOG_USER);
// Continue script ...
?>

更新日志

版本	说明
5.4.0	This function was removed from PHP.
5.3.0	This function now throws an E_DEPRECATED notice.

参见

openlog()Open connection to system logger
syslog()Generate a system log message
closelog() 关闭系统日志链接

define_syslog_variables() only defines global variables. Constants are already always defined, if the syslog module is loaded. You _do not_ need to call this to use the syslog constants.
For instance, on my system:
<?php
var_dump(LOG_ERR); // int(3)
var_dump($LOG_ERR); // NULL (and an E_NOTICE)
define_syslog_variables();
var_dump($LOG_ERR); // int(3)
?>