Detailed explanation of bridge mode of PHP design pattern

Bridge modeUsing a clever way to deal with the problems of multi-layer inheritance, Bridge modereplaces traditional multi-layer inheritance with abstract association, and separates the static relationships between classes. The inheritance relationship is converted into a dynamic object combination relationship. Bridge mode makes the system more flexible and easy to expand, while effectively controlling the number of classes in the system

##Bridge The concept of:

<?php

/*
 * 桥接模式
 */

interface allPan
{
    public function setColor();
}


abstract class Pan
{
    public $color;

    public function setColor()
    {
    }

    public function write()
    {
    }
}

class  maxPan extends Pan
{
    public function write()
    {
        $this->color->setcolor();
        echo "写出来的粗体字";
    }
}

class smallPan extends Pan
{
    public function write()
    {
        $this->color->setcolor();
        echo "写出来的细体字";
    }
}

class Red implements allPan
{
    public function setColor()
    {
        echo "红色";
    }
}

class Blick implements allPan
{
    public function setColor()
    {
        echo "黑色";
    }
}

function testDriver() //客户端
{
    $colors = new maxPan();
    $colors->color = new Red();
    $colors->write();
}

testDriver();

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