How can non-object errors be debugged effectively in PHP code?

Non-object errors in PHP code can be debugged effectively by checking if the variable being accessed is actually an object before trying to use object methods or properties on it. This can be done using the `is_object()` function to validate the variable type before proceeding with any object-specific operations.

// Check if the variable is an object before using object methods or properties
if (is_object($variable)) {
    // Proceed with using object methods or properties
    $variable->method();
} else {
    // Handle the case where the variable is not an object
    echo "Variable is not an object.";
}