How can one efficiently integrate additional methods into an existing MySQL class for specific functionalities in PHP projects?

To efficiently integrate additional methods into an existing MySQL class for specific functionalities in PHP projects, you can extend the existing class and add the new methods within the child class. This approach allows you to keep the original functionality intact while adding new methods as needed.

class ExtendedMySQL extends OriginalMySQL {
    
    public function customMethod() {
        // Add custom functionality here
    }
    
    public function anotherCustomMethod() {
        // Add another custom functionality here
    }
}

// Implementation
$extendedMySQL = new ExtendedMySQL();
$extendedMySQL->customMethod();
$extendedMySQL->anotherCustomMethod();