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The Truth About PHP Variables

in PHP added by porteightyeight, on 8/7/2008 advanced tutorials internal memory

This article examines how PHP handles passing of variables internally, as well as how this relates to memory usage. This information is can be very useful for any professional PHP developer as it shows how passing variables by reference will normally result in more (not less) memory being used.

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PHP Compiler Internals

in PHP added by lornajane, on 4/2/2010 advanced compiler extension internal podcast sebastianbergmann

In this presentation we introduce a new language construct to demonstrate how one might go about modifying the PHP interpreter. The internals of which follow a pattern common to many language implementations, with lexical analysis, parsing, code generation, and execution phases. By the end of the presentation, it is hoped the audience will see that contributing to the PHP language core is not necessarily as difficult as it might seem.

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