How can variable naming conventions and consistency help in debugging PHP code effectively?

Variable naming conventions and consistency can help in debugging PHP code effectively by making it easier to understand the purpose and usage of variables throughout the code. By following a consistent naming convention, such as using camelCase or snake_case, developers can quickly identify variables and their intended use. This can reduce confusion and prevent errors when debugging code, as well as make it easier for other developers to understand and maintain the code in the future.

// Inconsistent variable naming
$userName = "John";
$user_age = 30;

// Consistent variable naming
$userName = "John";
$userAge = 30;