List all declared variables

I don't really need to do this, but I was wondering. Is there some way
of obtaining a list of all the variables that have been declared in a
PHP script ?
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Ie. for globals you have $_GLOBAL, is there something that would let you
know the name of all variables that have been declared?
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Ta.

On Apr 11, 5:38 pm, Tyno Gendo <you@localhostwrote:>
get_defined_vars
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(PHP 4 >= 4.0.4, PHP 5)
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get_defined_vars - Returns an array of all defined variables
Description
array get_defined_vars ( void )
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This function returns a multidimensional array containing a list of
all defined variables, be them environment, server or user-defined
variables, within the scope that get_defined_vars() is called.
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Interesting. And a function for getting defined functions and
classes... nice. As I say, don't actually need to use them at the
moment but that's good to know they are there!
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So many functions, I should randomly read through the manual and ponder
over what's there :-)