What are some potential pitfalls of trying to enforce type safety in PHP, considering its dynamic nature?

Enforcing type safety in PHP can be challenging due to its dynamic nature, as variables can change types at runtime. One potential pitfall is the overhead of constantly checking and converting types, which can impact performance. Another issue is the possibility of unintentionally coercing types, leading to unexpected behavior. To address this, developers can use PHP 7's scalar type declarations to explicitly specify the types of function parameters and return values. 

function add(int $a, int $b): int {
    return $a + $b;
}

echo add(5, 10); // Output: 15

Keywords

type safety dynamic nature PHP strict typing type coercion

Related Questions