function (s) usage monitoring

[alexanderpervak]

I wonder if there is some tool or embedded feature to monitor some function usage.
For example, if I want to monitor

mail()

function usage from all of the virtual hosts.

Any ideas? 🙂

[IceD]

It's simple. Before installing PHP adjust sources of mail function... 😉

[alexanderpervak]

irrefragable answer! 🙂))))))))))
and HOW?
and is there some tool, short-end, etc to detect it?