box_class_02.php
<?php class Box { //Properties private $_length; private $_width; private $_height; //Constructor public function __construct($length, $width, $height) { $this->_length = $length; $this->_width = $width; $this->_height = $height; } //Method public function volume() { return $this->_length * $this->_width * $this->_height; } } $myBox = new Box(20,10, 5); $myVolume = $myBox->volume(); echo("Volume = " . $myVolume . "<br/>"); ?>