How can the PHP manual be utilized to understand and implement variables within variables effectively?

To understand and implement variables within variables effectively in PHP, one can refer to the PHP manual for clear explanations and examples. By understanding variable scope, concatenation, and interpolation, one can nest variables within variables to create dynamic and flexible code. 

$name = "John";
$greeting = "Hello, $name!";
echo $greeting;

Keywords

PHP manual variables nested variables variable interpolation variable scope

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