How can the content of a variable be treated as a variable itself in PHP?

To treat the content of a variable as a variable itself in PHP, you can use variable variables. This means using the value of one variable as the name of another variable. This can be achieved by placing an extra dollar sign ($) before the variable that holds the variable name. Example: 

$variableName = 'hello';
$$variableName = 'world';

echo $hello; // Output: world

Keywords

variable content treat PHP dynamic

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