php中多个构造函数的问题解决办法

public function construct($id, $dname)
public function construct($device=array())

<?php
 
class demo{
 
    private $_args;
 
    public function construct(){
        $args_num = func_num_args();
        if($args_num==2){
            $this->_args = array(
                                'id' => func_get_arg(0),
                                'dname' => func_get_arg(1)
                            );
        }elseif($args_num==1 && is_array(func_get_arg(0))){
            $this->_args = array(
                                'device'=>func_get_arg(0)
                            );
        }else{
            exit('func param not match');
        }    
    }
 
    public function show(){
        echo '<pre>';
        print_r($this->_args);
        echo '</pre>';
    }
 
}
 
// demo1
$id = 1;
$dname = 'fdipzone';
$obj = new demo($id, $dname);
$obj->show();
 
// demo2
$device = array('iOS','Android');
$obj = new demo($device);
$obj->show();
 
?>