php.ini中的設定會影響這些函數的行為。
Here is 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().
以下經常有效常數為PHP核心的一部分。
表格 2. openlog() Options
表格 3. syslog() Priorities (in descending
order)
表格 4. dns_get_record()
Options