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PHP is a commonly used, server side programming language, most often used to code web applications. Wordpress, Joomla, and many other common web applications are written in PHP. With PHP knowledge you can customize or create just about any kind of web site or web application.
In this video LearnToProgram.tv trainer Mark Lassoff introduces the concept of variables in PHP. PHP uses non-strongly typed variables allow for much more flexibility and ease of learning. Mark demonstrates declaring and initializing variables, arithmetic operators and outputting variable values.
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