47 PHP 魔术方法

<code><span><span>class</span><span>A</span>
{</span><span>public</span><span>$name</span>;
}

<span>$aa</span> = <span>new</span> A();
<span>$aa</span>->name = <span>'wjh'</span> . <span>'<br>'</span>;
<span>echo</span><span>$aa</span>->name;

<span>$bb</span> = <span>clone</span><span>$aa</span>;
<span>$bb</span>->name = <span>'wang lu xi'</span>;  <span>//不改变赋值对象的属性</span><span>echo</span><span>$bb</span>->name . <span>'<br>'</span>;
<span>echo</span><span>$aa</span>->name . <span>'<br>'</span>;</code>

<code><span><span><?php </span><span><span>class</span><span>A</span>
{</span><span>public</span><span>$name</span>;

    <span>public</span><span><span>function</span><span>__clone</span><span>()</span>  // 魔术方法，只要<span>clone</span>就运行这个方法
    {</span><span>$this</span>->name = <span>' wei jian hua'</span>;
    }
}

<span>$aa</span> = <span>new</span> A();
<span>$aa</span>->name = <span>'wjh'</span> . <span>'<br>'</span>;
<span>echo</span><span>$aa</span>->name;

<span>$bb</span> = <span>clone</span><span>$aa</span>;

<span>echo</span><span>$bb</span>->name;</span></span></code>