您当前的位置： 首页 > 慢生活 > 程序人生 网站首页程序人生

php多个trait方法冲突-别名as

发布时间：2021-09-24 16:09:07编辑：雪饮阅读（）

 像是上文中php中trait多个方法重名后可以使用insteadof进行替换以实现指定到底从多个方法中走那个trait的方法。那么在insteadof后还可以通过as实现某个trait的某个方法的别名。

test.php：
<?php
declare(strict_types=1);
trait Dog{
    public function say(){
        echo "This is dog say";
    }
    public function walk(){
        echo "This is dog walk";
    }
}
trait Dog2{
    public function say(){
        echo "This is dog2 say";
    }
    public function walk(){
        echo "This is dog2 walk";
    }
}
class Animal{
    public function eat(){
        echo "This is animal eat";
    }
}
class Cat extends Animal{
    use Dog,Dog2{
        Dog2::say insteadof Dog;
        Dog2::walk insteadof Dog;
        Dog2::say as say2;
        Dog2::walk as walk2;
    }
}
$cat = new Cat();
$cat->say();
$cat->walk();
$cat->say2();
$cat->walk2();
?>
运行结果：
C:\Users\Administrator\PhpstormProjects\untitled\organizing>D:\phpstudy_pro\Extensions\php\php7.3.4nts\php.exe C:\Users\Administrator\PhpstormProjects\untitled\test.php
This is dog2 sayThis is dog2 walkThis is dog2 sayThis is dog2 walk