What are some common errors and debugging techniques when working with PHP variables in different switch cases?

One common error when working with PHP variables in different switch cases is forgetting to initialize the variable before the switch statement. To solve this, make sure to declare the variable before the switch statement to avoid any undefined variable errors. Additionally, ensure that each case handles the variable correctly to prevent unexpected behavior.

$variable = "value";

switch ($variable) {
    case "value1":
        // code for value1
        break;

    case "value2":
        // code for value2
        break;

    default:
        // default code
        break;
}