An Example of Class in PHP

For teacher, all of the students have a common attributes (adjective in the context of grammar. for example, every student have a unique roll number) and some methods (verb in the context of grammar. for example, every student can read a poem "Twinkle twinkle little star". Also, they can (student) know the history of "Troy of Helen".

Then the structure of a Student class written in PHP as

class Student { 
      private $roll;
      public function recrete()
      public function historian()
}