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20 lines
433 B
20 lines
433 B
<?php
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/**
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* 代码复用，填补了php中继承不能多继承的缺点
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* 感觉就是use Cardoor 的代码等于trait Cardoor{...}的代码，有点像宏
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*/
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// 1 用trait定义
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trait Cardoor{
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public function open(){
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echo "car door open".PHP_EOL;
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}
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}
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class Car{
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use Cardoor; //2 用use调用trait
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}
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$myCar = new Car();
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$myCar->open();
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?>
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