What are the best practices for defining return types in PHP methods like toString or toInteger?

When defining return types in PHP methods like toString or toInteger, it is important to clearly specify the type of data that the method will return. This helps improve code readability and maintainability by providing clear expectations for the return value. For toString methods, it is common to return a string, while for toInteger methods, it is common to return an integer. By specifying the return type in the method signature, you can ensure that the method consistently returns the expected data type. 

class Example {
    public function toString(): string {
        // Method implementation
        return 'This is a string';
    }

    public function toInteger(): int {
        // Method implementation
        return 123;
    }
}

Keywords

return types PHP methods toString toInteger defining

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