&reftitle.runtime; &extension.runtime;

# 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.

&ini.php.constants; &ini.descriptions.title;

`define_syslog_variables` `boolean`

- 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`.