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What is the difference between "echo" and "print" in PHP? How a variable is declared in PHP? What is the difference between $message and $$message? What are the ways to define a constant in PHP? How many data types are there in PHP? How to do single and multi-line comments in PHP? What is the use of the count() function in PHP? How many types of arrays are there in PHP? How can I display text with a PHP script? Explain what $GLOBALS is..

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What is the difference between "echo" and "print" in PHP? How a variable is declared in PHP? What is the difference between $message and $$message? What are the ways to define a constant in PHP? How many data types are there in PHP? How to do single and multi-line comments in PHP? What is the use of the count() function in PHP? How many types of arrays are there in PHP? How can I display text with a PHP script? Explain what $GLOBALS is.

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