Chapter 33. Syslog Functions
The syslog functions are used to manage sending messages to the system logging facilities. On UNIX-like systems, they act as a wrapper for the underlying system logging functions and—with a few minor exceptions—can be expected to behave like their C language counterparts. The UNIX syslog facility is quite powerful and configurable. Log messages can be sent to files, consoles, or remote hosts, or cause a myriad of other events to occur. Detailing the functionality of UNIX system loggers is beyond the scope of this book. For more information, consult your system’s man pages for entries on logger, syslog, syslogd, and syslog.conf.
When PHP is running under Windows, these functions send log messages to the event log. ...
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