面向对象基础

<?php
/**
 * Created by PhpStorm.
 * User: Vvvvv
 * Date: 2017/2/11
 * Time: 8:36
 */
//$arr = array('x','y','z');

//$x = anshu($a,$b);
//list($a,$b,$c) = $arr;
//$arr[0];
//echo $a;
//echo key($arr);
//echo current($arr);
//next($arr);
//echo key($arr);
//echo current($arr);
class test_class
{
    public $abc;//private私有变量    protect受保护的变量
    public $a;
    public $b;

    function square()
    {
        return $this->a * $this->b;
    }
}

$shili = new test_class();
$shili2 = new test_class();

$shili->a = 4;
$shili->b = 5;
$return = $shili->square();
//document.write()
//document->write()

var_dump($shili);
echo "<br>";
var_dump($shili2);