What potential pitfalls can arise when a class implements an interface with specific type hinting requirements?

When a class implements an interface with specific type hinting requirements, potential pitfalls can arise if the class does not correctly implement the required types or if the types are changed in the interface. To solve this issue, ensure that the class implements the interface methods with the correct parameter types and return types specified by the interface. It is important to regularly review and update the class implementation if the interface requirements change. 

interface MyInterface {
    public function myMethod(string $param): int;
}

class MyClass implements MyInterface {
    public function myMethod(string $param): int {
        // implementation
    }
}

Keywords

type hinting interface class PHP error handling

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