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详说include, require的区别与联系, 与当前脚本的作用域的关系以及类与对象的常用关键字,操作,以及几个魔术方法的演示
叫我孙大树
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<?php
//include, require的区别与联系, 与当前脚本的作用域的关系
//include,require最重要的区别就是:include在载入文件时如果出现错误,会报错,但代码还会正常运行下去;require在载入文件时如果出现问题将会直接终止代码运行。
//因此,include适合载入不太重要的外部文件,require适合载入重要的某种底层文件。它们与当前脚本共用一个作用域。

//将课堂上演示的类与对象的常用关键字,操作,以及几个魔术方法进行演示
class Competitor
{
    //选手姓名
    public $name;
    //选手年龄
    public $age;
    //选手组别
    public $group;
    //选手性别
    protected $isMale;
    //随机一个静态属性
    public static $count;

    public function __construct(string $name, int $age, string $group, bool $isMale)
    {
        $this->age = $age;
        $this->name = $name;
        $this->group = $group;
        $this->isMale = $isMale;
        self::$count += 1;
    }

    public function getSex()
    {
        return $this->isMale;
    }

    public static function getCount()
    {
        return self::$count;
    }

    public function getInfo()
    {
        $arr = [
            'age' => $this->age,
            'name' => $this->name,
            'group' => $this->group,
            'isMale' => $this->isMale,
        ];
        return $arr;
    }

    public function __get($value)
    {
        if (isset($this->$value) && $value != 'isMale') {
            return $this->$value;
        } else {
            return 'Unknow Value';
        }
    }

    public function __set($name, $value)
    {
        $this->$name = $value;
    }
}

$competitor = new Competitor('叫我孙大树', 23, '青年组', true);
print_r($competitor->getInfo());
echo '<br>';
$competitor->aaaa = 666;
echo $competitor->aaaa . '<br>';
echo Competitor::$count . '<br>';
$test = new Competitor('test', 2, 'test', false);
echo Competitor::$count . '<br>';
echo $competitor->isMale . '<br>';
echo $competitor->getSex() ? '性别是:男<br>' : '性别是:女<br>';
echo $test->getSex() ? '性别是:男<br>' : '性别是:女<br>';

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Correcting teacher:PHPzPHPz

Correction status:qualified

Teacher's comments:
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