User::find_by_sql("SELECT * FROM users WHERE age > 18"); // This will return an array of User objects, where the age is greater than 18.
User::find_by_sql("SELECT * FROM users WHERE name = 'John'"); // This will return an array of User objects, where the name is 'John'.The PHP Active Record library is a PHP package that provides an implementation of the Active Record pattern. It allows developers to interact with a database using object-oriented programming principles.