Home >php教程 >PHP源码 >PHP计算器(工厂模式)

PHP计算器(工厂模式)

PHP中文网
PHP中文网Original
2016-05-25 17:13:521219browse

php代码

abstract class Calculator
        {
        	private $number1;
        	private $number2;
        	public $result;
			/**
	 * @return the $number2
	 */
	public function getNumber2() {
		return $this->number2;
	}

			/**
	 * @param field_type $number2
	 */
	public function setNumber2($number2) {
		$this->number2 = $number2;
	}

	/**
	 * @return the $number1
	 */
	public function getNumber1() {
		return $this->number1;
	}

			/**
	 * @param field_type $number1
	 */
	public function setNumber1($number1) {
		$this->number1 = $number1;
	}
	
	abstract function get_result();
 }
        
    class Add extends Calculator
	{
		public function get_result($number1,$number2)
		{
			return $number1+$number2;
		}
	}
	
	class Sub extends Calculator
	{
		public function get_result($number1,$number2)
		{
			return $number1-$number2;
		}
	}
	
	class Mul extends Calculator
	{
		public function get_result($number1,$number2)
		{
			return $number1*$number2;
		}
	}
	
	class Div extends Calculator
	{
		public function get_result($number1,$number2)
		{
			return $number1/$number2;
		}
	}
	
	class Factory
	{
		public function Building($notes)
		{
			if($notes=="+")
			{
				$add=new Add();
				return $add;
			}
			elseif ($notes=="-")
			{
				$sub=new Sub();
				return $sub;
			}
			elseif($notes=="*")
			{
				$mul=new Mul();
				return $mul;
			}
			else
			{
				$p=new Div();
				return $p;
			}
		}
	}

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn