How can PHP developers ensure that their recursive functions have proper termination conditions to prevent script errors or unexpected behavior?

Recursive functions in PHP should always have proper termination conditions to prevent infinite loops and unexpected behavior. Developers can ensure this by checking for a base case where the function should stop recursing. This base case could be reaching a certain condition or a specific input value. By including a termination condition, developers can prevent script errors and ensure the function behaves as intended.

function recursiveFunction($input) {
    // Base case: check if input meets termination condition
    if ($input == 0) {
        return;
    }
    
    // Recursive call
    recursiveFunction($input - 1);
}

// Start the recursive function with an initial input value
recursiveFunction(5);