Simple OOP reference for simple functionality across languages.

ex.js

// class w/construct
var happy = function (msg) {
     this.message = msg;
};

// method
happy.prototype.hello = function(){
    console.log('hi');
    console.log(this.message)
}

// instiante class
var h = new happy('yo')
// call method
h.hello()
// output
// hi
// yo

ex.php

<?
// class
class happy{
    
    var $message = 'hello';
    
    // method (construct)
    function __construct($msg){
        $this->message = $msg;
    }
    
    // method
    function hello(){
        echo "hi\r\n";
        echo $this->message;
    }
}

// instiante
$h = new happy('yo');
// call method
$h->hello(); // hi yo

ex.py

from __future__ import print_function


class Happy(object):
    message = 'hello'

    def __init__(self, msg):
        self.message = msg

    def hello(self):
        print('hi')
        print(self.message)

# instantiate
h = Happy('yo')
# call method
h.hello()
# hi 
# yo