大话设计模式第十章---模板方法模式PHP实现

<?php
abstract class Abstract_class {
    abstract public function primitive_operation1();
    abstract public function primitive_operation2();

    public function template_method() {
        echo "this is the template_method<br/>";
        $this->primitive_operation1();
        $this->primitive_operation2();
    }
}

class Concrete_class_A extends Abstract_class {
    public function primitive_operation1() {
        echo "具体类A方法1实现<br/>";
    }
    public function primitive_operation2() {
        echo "具体类A方法2实现<br/>";
    }
}

class Concrete_class_B extends Abstract_class {
    public function primitive_operation1() {
        echo "具体类B方法1实现<br/>";
    }
    public function primitive_operation2() {
        echo "具体类B方法2实现<br/>";
    }
}

$c = new Concrete_class_A();
$c->template_method();

$c = new Concrete_class_B();
$c->template_method();