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- <?php
- //
- // +----------------------------------------------------------------------+
- // | PHP Version 4 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997-2003 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 2.0 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available at through the world-wide-web at |
- // | http://www.php.net/license/2_02.txt. |
- // | If you did not receive a copy of the PHP license and are unable to |
- // | obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Authors: Jesus M. Castagnetto <jmcastagnetto@php.net> |
- // +----------------------------------------------------------------------+
- //
- // $Id: Element.php,v 1.3 2003/01/04 11:56:25 mj Exp $
- //
-
- /**
- * Utility class that defines a chemical element object
- *
- * @author Jesus M. Castagnetto <jmcastagnetto@php.net>
- * @version 1.0
- * @access public
- * @package Science_Chemistry
- */
- class Science_Chemistry_Element {
-
- /**
- * Element's symbol, one or two characters, case sensitive
- *
- * @var string
- * @access public
- */
- var $symbol;
-
- /**
- * Element's name
- *
- * @var string
- * @access public
- */
- var $name;
-
- /**
- * Element's atomic number
- *
- * @var integer
- * @access public
- */
- var $number;
-
- /**
- * Element's atomic weight in a.m.u (atomic mass units)
- *
- * @var float
- * @access public
- */
- var $weight;
-
- /**
- * Element's melting point, with comments
- *
- * @var string
- * @access public
- */
- var $melting_point;
-
- /**
- * Element's boiling point, with comments
- *
- * @var string
- * @access public
- */
- var $boiling_point;
-
- /**
- * Element's family
- *
- * @var string
- * @access public
- */
- var $family;
-
- /**
- * Constructor for the class
- *
- * @param string $sym element symbol
- * @param string $name element name
- * @param integer $num atomic number
- * @param float $wgt atomic weight
- * @param string $mp melting point (with comments)
- * @param string $bp boiling point (with comments)
- * @param string $fam family
- * @return object Science_Chemistry_Element
- * @access public
- */
- function Science_Chemistry_Element ($sym, $name, $num, $wgt, $mp, $bp, $fam) {
- $this->symbol = $sym;
- $this->name = $name;
- $this->number = $num;
- $this->weight = $wgt;
- $this->melting_point = $mp;
- $this->boiling_point = $b;
- $this->family = $fam;
- }
-
- /**
- * Checks if an object is a Science_Chemistry_Element instance
- *
- * @param object Science_Chemistry_Element $obj
- * @return boolean
- * @access public
- */
- function isElement($obj) {
- return (is_object($obj) &&
- (get_class($obj) == "Science_Chemistry_Element" ||
- is_subclass_of($obj, "Science_Chemistry_Element"))
- );
- }
-
- } // end of Science_Chemistry_Element
-
- // vim: expandtab: ts=4: sw=4
- ?>
-