Runtime Configuration

The behaviour of these functions is affected by
settings in php.ini.

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.

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().