.Open The Semantics of PHP
This page was created by Paul Conrad as part of his Graduate
Independent Study (CSCI695) of the syntax and semantics of the PHP
language.

This page describes the semantics of the PHP programming language.  As of
date
there does not seem to any literature or any other form of information on the
semantics of the PHP programming language.  This page, therefore, is going to
be an attempt to offer such information.

. See Also

For a quick, concise reference to terms used through out this page, see 
.See php.glossary.html
which contains meta-linguistic terms, lexemes, and keyword definitions based on
the C++ glossary found at
.See http://cse.csusb.edu/dick/samples/c++.glossary.html
with the appropriate adaptations to PHP.

. PHP Semantics

The PHP programming language was found to be a rather quite large programming language
in terms of how much functionality is put in place for a programming language.  There
really is not a truely defined semantics for the language.  However, here are some notes
partial on some semantics that could be dug up.

. Variables

.Set
 The O("$") in the variable line tells us that PHP allows us to reference the value of
a variable whose name is stored in some other variable.  To see this in action, visit
.See php_samples/variable_variables.php
for details.
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. Functions

.Set
 In PHP, function names are case-insensitive.  The follow function names are all valid for
the same function through the eyes of PHP:

.As_is 		foobar, FooBar, fooBar, FOObar, etc

 If the indentifier of the function is led with "&", the function will return values by reference.
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.Close The Semantics of PHP