The content of the email is delivered over the "standard input" (stdin)
of the process; the name "pipe" is because this is the normal Unix
terminology for connecting together commands in a pipeline.
You're crossing from the web-programming world into the Unix programming
world here, and encountering confusion from others because they've dealt
with pipes for so long that they don't understand a programming model
which doesn't deal with pipes routinely.
Using Google to search for (Unix pipes for PHP programmers) suggests
this Stack Overflow article:
http://stackoverflow.com/questions/5891888/piping-data-into-command-line-php
and the answers suggest that you're after a `php://stdin` URL for
accessing the data stream.
-Phil
Hey Phil,
Yeah it occurred to me a bit after posting to the mailing list that
it's probably getting there through STDIN.
Now I am only wondering whether PHP is the best choice for this kind
of task though, or if Perl would be a better choice at all.
Thanks to all for your help. That really solved my issue quickly.
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