Are there any best practices to follow when using variable variables in PHP?

When using variable variables in PHP, it is important to follow best practices to ensure code readability and maintainability. One common best practice is to avoid using variable variables whenever possible, as they can make code harder to understand and debug. If you must use variable variables, make sure to properly sanitize and validate user input to prevent security vulnerabilities. 

// Example of using variable variables in PHP
$variable = 'hello';
$$variable = 'world';

echo $hello; // Output: world

Keywords

variable variables PHP programming syntax security

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