PHP新手关于构造函数初始化成员变量问题求助？

[kaiixing]

我用php写了个类，类里面两个变量，通过构造函数传入两个参数对这两个变量初始化，
但是总是出现两个变量被初始化成同样的值。代码如下：

<?php
class page
{
        public $A1;
        public $A2;
        function __construct($arg1,$arg2)
        {   
                $this->$A1=$arg1;
                $this->$A2=$arg2;
        }

        function show()
        {   
                var_dump($this->$A1);
                echo "<hr/>";
                var_dump($this->$A2);
                echo "<hr/>";

        }

}

$pag=new page("This is Arg1",1000);
$pag->show();
/*
output:
int(1000)
____________________
int(1000

*/

?>

[xuzuning]

class page { public $A1; public $A2; function __construct($arg1,$arg2) { $this->A1=$arg1; $this->A2=$arg2; } function show() { var_dump($this->A1); echo "<hr/>"; var_dump($this->A2); echo "<hr/>"; } }

[kaiixing]

感谢版主。我看书不够仔细。。谢谢。

引用 1 楼 xuzuning 的回复:

class page { public $A1; public $A2; function __construct($arg1,$arg2) { $this->A1=$arg1; $this->A2=$arg2; } function show() { var_dump($this->A1); echo "<hr/>"; var_dump($this->A2); echo "<hr/>"; } }