Example explanation of PHP interface features_PHP tutorial

We are learning the VideoCard.php interface file (functional interface definition of the graphics card)

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<span><strong><font color="#006699"><span class="tag"><?</SPAN><SPAN class=tag-name>php</SPAN></FONT></STRONG><SPAN> </SPAN></SPAN><LI class=""><SPAN>interface VideoCardInter{  </SPAN><LI class=alt><SPAN>    function Display();  </SPAN><LI class=""><SPAN>    function getName();  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><STRONG><FONT color=#006699>?></span></font></strong></span><span> </span>
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Dmeng.php implements the interface (the manufacturers of Diamond have implemented these interfaces. How to implement them is not a matter of the motherboard manufacturer)

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<span><strong><font color="#006699"><span class="tag"><?</SPAN><SPAN class=tag-name>php</SPAN></FONT></STRONG><SPAN> </SPAN></SPAN><LI class=""><SPAN>include_once("VideoCard.php");  </SPAN><LI class=alt><SPAN>class Dmeng implements VideoCardInter {  </SPAN><LI class=""><SPAN>    function Display(){  </SPAN><LI class=alt><SPAN>        echo "Display";  </SPAN><LI class=""><SPAN>    }  </SPAN><LI class=alt><SPAN>    function getName(){  </SPAN><LI class=""><SPAN>        return "Dmeng VideoCard";  </SPAN><LI class=alt><SPAN>    }  </SPAN><LI class=""><SPAN>}  </SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><STRONG><FONT color=#006699>?></span></font></strong></span><span> </span>
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Mainboard.php application interface (insert the graphics card into the motherboard, the motherboard only needs to use these interfaces, or not)

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<span><strong><font color="#006699"><span class="tag"><?</SPAN><SPAN class=tag-name>php</SPAN></FONT></STRONG><SPAN> </SPAN></SPAN><LI class=""><SPAN>include_once("VideoCard.php");  </SPAN><LI class=alt><SPAN>include_once("Dmeng.php");  </SPAN><LI class=""><SPAN>class Mainboard{  </SPAN><LI class=alt><SPAN>    var $vc;  </SPAN><LI class=""><SPAN>    function run(VideoCardInter $vc){  //定义VideoCardInter接口类型参数，这时并不知道是谁来实现。  </SPAN><LI class=alt><SPAN>        $this-</SPAN><SPAN class=tag><STRONG><FONT color=#006699>></span></font></strong></span><span class="attribute"><font color="#ff0000">vc</font></span><span>=$vc;  </span>
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<span>        $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>vc-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>Display();  </span>
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<li class="alt"><span>        echo "主板运行！";  </span></li>
<li class=""><span>    }  </span></li>
<li class="alt"><span>}  </span></li>
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<span>$</span><span class="attribute"><font color="#ff0000">conputer</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">new</font></span><span> Mainboard();  </span>
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<span>$conputer-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>run(new Dmeng);  //用的时候把实现接口类的名称写进来，<br>（现在是帝盟的显卡，也可以换成别的场家的，只要他们都实现了接口）  </span>
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<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span> </span>
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Since PHP is a dynamic language, the type cannot be like JAVA The definition is very rigid. When defining the interface, it will make an error to write the return type. I guess in PHP6, the definition may be more strict.

PS: I only wrote the most basic part of the PHP interface features, and you can also add CPU and other interfaces.

http://www.bkjia.com/PHPjc/446410.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/446410.htmlTechArticleWe are studying the VideoCard.php interface file (functional interface definition of the graphics card) ? php interfaceVideoCardInter{ functionDisplay(); functiongetName(); } ? Dmeng.php implements the interface (Emperor...