i asked the same question on Ruby: how do you write some code to print
out the variable's name automatically as well as its content. In here, I
got some helpful discussions and solutions.

And this is what happen instead in the PHP newsgroup:
http://groups.google.com/group/comp.lang.php/browse_thread/thread/e02037a5c14e54c9/3288eeef436b64f7#3288eeef436b64f7
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