Are there any best practices for handling type errors in PHP, especially when they occur only in certain environments like PHPUnit tests?

When handling type errors in PHP, especially in certain environments like PHPUnit tests, it's important to use type declarations and strict type checking to catch errors early. One best practice is to use type hinting in function parameters and return types to ensure that the correct types are passed and returned. Additionally, using try-catch blocks to handle exceptions and logging any errors can help in debugging type errors.

// Example of using type hinting in function parameters and return types
function add(int $a, int $b): int {
    return $a + $b;
}

try {
    // Call the function with correct types
    echo add(5, 10);
    
    // Call the function with incorrect types (will throw a type error)
    echo add('5', '10');
} catch (TypeError $e) {
    // Handle the type error
    echo "Type error: " . $e->getMessage();
}