Question

pairings = 
[[('greg', 'lilly'), ('john', 'samantha'), ('andy', 'tammy')],
 [('greg', 'lilly'), ('john', 'tammy'), ('andy', 'samantha')],
 [('greg', 'samantha'), ('john', 'lilly'), ('andy', 'tammy')],
 [('greg', 'samantha'), ('john', 'tammy'), ('andy', 'lilly')],
 [('greg', 'tammy'), ('john', 'lilly'), ('andy', 'samantha')],
 [('greg', 'tammy'), ('john', 'samantha'), ('andy', 'lilly')]]

我想在<?php class mainClass { public function demo() { return "You have entertered to demo1"; } } class childClass extends mainClass { public function demo2() { return $this->demo(); } public function demo3() { return "You have entered to demo3"; } }中调用demo3的{{1}}方法。因为我是oops的新手，我有点困惑。我也在考虑这个抽象类。但我对抽象类的想法不够。

Answer 1

这是你在找什么？您不必调用mainClass，因为您通过新的childClass扩展它。我还在demo3中添加了echo以在屏幕上显示结果。

<?php

class mainClass
{
    public function demo()
    {
        return "You have entertered to demo1";
    }

}

class childClass extends mainClass
{
    public function demo2()
    {
        return $this->demo();
    }
    public function demo3()
    {
        echo "You have entered to demo3";
    }
}
$test = new childClass;
$test->demo3();

?>

如何在php中调用父类中的子类方法

1 个答案: