Basic OOP in PHP

gistfile1.php

<?php
// --- PHP --- //
// Declare and construct an object from the class HLine 
// PHP doesn't care whether the parameters are ints or strings
$h1 = new HLine(20, 'meow'); 
// show the ypos property of h1
echo $h1->ypos;

class HLine{
	/*
        Properties and variables don't need data types in PHP
	Generally they are declared public, private, or protected. Public is the default
        */
	public $ypos, $speed
	
	/*
        In PHP, the constructor is always named the same: __construct()
	'public' is optional.
	The method parameters don't need data types
	     -- they can be integers, strings, whatever
	Like other variables in PHP, they need the dolloar sign ($)
	*/
	public function __construct($y, $s){
		/*
                   ypos and speed are properties of the class
		   y and s are parameters; they are local to the function
		   properties have to use $this
                 */
		$this->ypos = $y; 
    		$this->speed = $s;
	}
	
	// no data types needed
	public function doSomething($num) {
		// do something
    	}
	
}