The internal debugger in PHP 3 is useful for tracking
down evasive bugs. The debugger works by connecting to a
TCP port for every time PHP 3
starts up. All error messages from that request will be sent
to this TCP connection. This information is intended for
"debugging server" that can run inside an IDE or programmable editor (such as
Emacs).
How to set up the debugger:
Set up a TCP port for the debugger in the configuration
file (debugger.port)
and enable it (debugger.enabled).
Set up a TCP listener on that port somewhere (for
example socket -l -s 1400 on
UNIX).
In your code, run "debugger_on(host)", where host is the IP number or name
of the host running the TCP
listener.