How can variable naming conventions in PHP code help improve readability and organization?

Variable naming conventions in PHP code can help improve readability and organization by providing clear and descriptive names for variables. This makes it easier for other developers (or even yourself in the future) to understand the purpose of each variable and how it is being used in the code. By following a consistent naming convention, such as using camelCase or snake_case, you can create a more cohesive and understandable codebase.

// Bad variable naming
$a = 10;
$b = 20;
$c = $a + $b;

// Good variable naming
$firstNumber = 10;
$secondNumber = 20;
$sum = $firstNumber + $secondNumber;