The behaviour of these functions is affected by settings in php.ini.
Network Configuration Options
|Name ||Default ||Changeable ||Changelog |
|define_syslog_variables ||"0" ||PHP_INI_ALL ||Deprecated in PHP 5.3.0. Removed in PHP 5.4.0. |
For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set
Here's a short explanation of the configuration directives.
Whether or not to define the various syslog variables (e.g. $LOG_PID, $LOG_CRON, etc.). Turning it off is a good idea performance-wise. At runtime, you can define these variables by calling define_syslog_variables().