为了提高代码的复用性，降低代码的耦合（组合实现的两种方式）
模式一：
<span style="color: #008080;"> 1</span> <span style="color: #000000;">php
</span><span style="color: #008080;"> 2</span> <span style="color: #008000;">//</span><span style="color: #008000;">组合模式一</span>
<span style="color: #008080;"> 3</span> <span style="color: #0000ff;">class</span><span style="color: #000000;"> Person{
</span><span style="color: #008080;"> 4</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> eat(){
</span><span style="color: #008080;"> 5</span> <span style="color: #0000ff;">echo</span> "eat.<br>"<span style="color: #000000;">;
</span><span style="color: #008080;"> 6</span> <span style="color: #000000;"> }
</span><span style="color: #008080;"> 7</span> <span style="color: #000000;">}
</span><span style="color: #008080;"> 8</span>
<span style="color: #008080;"> 9</span> <span style="color: #0000ff;">class</span><span style="color: #000000;"> Phone{
</span><span style="color: #008080;">10</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> call(){
</span><span style="color: #008080;">11</span> <span style="color: #0000ff;">echo</span> "phone call.<br>"<span style="color: #000000;">;
</span><span style="color: #008080;">12</span> <span style="color: #000000;"> }
</span><span style="color: #008080;">13</span> <span style="color: #000000;">}
</span><span style="color: #008080;">14</span>
<span style="color: #008080;">15</span> <span style="color: #008000;">//</span><span style="color: #008000;">学生也需要call()这个方法，为了提高代码的复用性(组合)</span>
<span style="color: #008080;">16</span> <span style="color: #0000ff;">class</span> Student <span style="color: #0000ff;">extends</span><span style="color: #000000;"> Person{
</span><span style="color: #008080;">17</span> <span style="color: #0000ff;">private</span> <span style="color: #800080;">$people</span><span style="color: #000000;">;
</span><span style="color: #008080;">18</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> learning(){
</span><span style="color: #008080;">19</span> <span style="color: #0000ff;">echo</span> "learn.<br>"<span style="color: #000000;">;
</span><span style="color: #008080;">20</span> <span style="color: #000000;"> }
</span><span style="color: #008080;">21</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> func(<span style="color: #800080;">$class</span>, <span style="color: #800080;">$method</span>){<span style="color: #008000;">//</span><span style="color: #008000;">兼容多个类的多个方法</span>
<span style="color: #008080;">22</span> <span style="color: #800080;">$this</span>->people = <span style="color: #0000ff;">new</span> <span style="color: #800080;">$class</span><span style="color: #000000;">;
</span><span style="color: #008080;">23</span> <span style="color: #800080;">$this</span>->people-><span style="color: #800080;">$method</span><span style="color: #000000;">();
</span><span style="color: #008080;">24</span> <span style="color: #000000;"> }
</span><span style="color: #008080;">25</span> <span style="color: #000000;">}
</span><span style="color: #008080;">26</span>
<span style="color: #008080;">27</span> <span style="color: #800080;">$student</span> = <span style="color: #0000ff;">new</span><span style="color: #000000;"> Student();
</span><span style="color: #008080;">28</span> <span style="color: #800080;">$student</span>-><span style="color: #000000;">eat();
</span><span style="color: #008080;">29</span> <span style="color: #800080;">$student</span>->func('Phone', 'call'<span style="color: #000000;">);
</span><span style="color: #008080;">30</span> <span style="color: #800080;">$student</span>->learning();
模式二：
<span style="color: #008080;"> 1</span> <span style="color: #000000;">php
</span><span style="color: #008080;"> 2</span> <span style="color: #008000;">//</span><span style="color: #008000;">组合模式二</span>
<span style="color: #008080;"> 3</span> <span style="color: #0000ff;">class</span><span style="color: #000000;"> Person{
</span><span style="color: #008080;"> 4</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> eat(){
</span><span style="color: #008080;"> 5</span> <span style="color: #0000ff;">echo</span> "eat.<br>"<span style="color: #000000;">;
</span><span style="color: #008080;"> 6</span> <span style="color: #000000;"> }
</span><span style="color: #008080;"> 7</span> <span style="color: #000000;">}
</span><span style="color: #008080;"> 8</span>
<span style="color: #008080;"> 9</span> <span style="color: #000000;">trait Drive{
</span><span style="color: #008080;">10</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> call(){
</span><span style="color: #008080;">11</span> <span style="color: #0000ff;">echo</span> "phone call.<br>"<span style="color: #000000;">;
</span><span style="color: #008080;">12</span> <span style="color: #000000;"> }
</span><span style="color: #008080;">13</span> <span style="color: #000000;">}
</span><span style="color: #008080;">14</span>
<span style="color: #008080;">15</span> <span style="color: #0000ff;">class</span> Student <span style="color: #0000ff;">extends</span><span style="color: #000000;"> Person{
</span><span style="color: #008080;">16</span> <span style="color: #0000ff;">use</span><span style="color: #000000;"> Drive;
</span><span style="color: #008080;">17</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> learning(){
</span><span style="color: #008080;">18</span> <span style="color: #0000ff;">echo</span> "learn.<br>"<span style="color: #000000;">;
</span><span style="color: #008080;">19</span> <span style="color: #000000;"> }
</span><span style="color: #008080;">20</span> <span style="color: #000000;">}
</span><span style="color: #008080;">21</span>
<span style="color: #008080;">22</span> <span style="color: #800080;">$student</span> = <span style="color: #0000ff;">new</span><span style="color: #000000;"> Student();
</span><span style="color: #008080;">23</span> <span style="color: #800080;">$student</span>-><span style="color: #000000;">eat();
</span><span style="color: #008080;">24</span>
<span style="color: #008080;">25</span> <span style="color: #008000;">//</span><span style="color: #008000;">当方法或属性同名时，当前类中的方法会覆盖 trait的 方法，而 trait 的方法又覆盖了基类中的方法</span>
<span style="color: #008080;">26</span> <span style="color: #800080;">$student</span>-><span style="color: #000000;">call();
</span><span style="color: #008080;">27</span> <span style="color: #800080;">$student</span>->learning();
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
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
How Long Does It Take To Beat Split Fiction?
4 weeks agoByDDD
R.E.P.O. Save File Location: Where Is It & How to Protect It?
1 months agoByDDD
R.E.P.O. Best Graphic Settings
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Assassin's Creed Shadows: Seashell Riddle Solution
1 weeks agoByDDD
Hot Tools
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
Atom editor mac version download
The most popular open source editor
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
