How can the "E.V.A. Principle" help in identifying and resolving common PHP coding errors and issues?

The "E.V.A. Principle" stands for Error, Visibility, and Accessibility. By following this principle, developers can easily identify and resolve common PHP coding errors and issues. For example, if a variable is not defined before being used, it will result in an error. To fix this, ensure that all variables are properly defined before being used in the code. Additionally, make sure that functions and classes are properly declared with the correct visibility and accessibility modifiers.

// Example of defining a variable before using it
$variable = "Hello";
echo $variable;