What are the best practices for naming variables in PHP to improve code readability?

Variable naming in PHP should be clear, descriptive, and follow a consistent naming convention to improve code readability. Use meaningful names that reflect the purpose of the variable and avoid using abbreviations or single-letter names. CamelCase or snake_case are common naming conventions used in PHP. By following these best practices, it will be easier for other developers (including your future self) to understand the code and maintain it effectively.

// Bad variable naming
$var = "John Doe";
$age = 25;

// Good variable naming
$fullName = "John Doe";
$userAge = 25;