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在使用 fetchMode PDO::FETCH_CLASS|PDO::FETCH_PROPS_LATE 循环从 PHP PDO 调用 fetchAll() 中返回的对象时，我正在尝试使用父类中定义的方法。

我设置了所有属性，但由于某种原因我无法调用这些方法 - 这就是我所拥有的：

abstract class Person {    
    protected $_table;    
    protected $Db;    
    public $id;
    public $first_name;
    public $last_name;
    public $email;      
    private $_password;
    private $_salt;     

    public function __construct() {
        $this->Db = new MySQL();
    }

    public function get($id = null) {
        $this->bind($this->Db->get($this->_table, $id));
    }    

    public function save() {
       // code goes here
    }

}    

class Client extends Person {

    protected $_table = 'users';    
    public $address_1;
    public $address_2;
    public $town;
    public $region;
    public $country_id;
    public $country_name;    

    public function __construct($id = null) {           
        parent::__construct();          
        $this->get($id);            
    }

    public function getAll() {
        $sql = "SELECT *
                FROM `{$this->_table}`
                ORDER BY `first_name` ASC";
        return $this->Db->getObjects(__CLASS__, $sql);
    }    

}

$objClient = new Client();
$users = $objClient->getAll();

if (!empty($users)) {
    foreach($users as $user) {      
        echo $user->first_name.' '.$user->last_name.'<br />';           
        $user->telephone = '11111';
        $user->save();          
    }
}

当我运行它时，我得到：

致命错误：调用未定义的方法 stdClass::save() in...

这是 $user 的一次迭代的 var_dump() 的输出：

object(stdClass)#6 (26) { 
    ["id"]=> string(1) "7"  
    ["first_name"]=> string(6) "First Name" 
    ["last_name"]=> string(4) "Last Name"   
    ["address_1"]=> NULL 
    ["address_2"]=> NULL 
    ["town"]=> NULL 
    ["region"]=> NULL 
    ["post_code"]=> NULL 
    ["country_id"]=> string(1) "2" 
    ["country_name"]=> string(1) "United Kingdom" 
    ["email"]=> string(21) "email@email.com"    
    ["password"]=> string(100) "ff4a140e5c03ab5ssf5dce455594e485fasa5cb2cd22ce715c086" 
    ["salt"]=> string(9) "salt8877" 
}

这是 MySQL() 类的 getObjects() 方法：

public function getObjects($className = null, $sql = null, $params = null) {
    if (!empty($className) && !empty($sql)) {
        $params = is_array($params) ? $params : array($params);
        try {
            $this->setFetchMode(PDO::FETCH_CLASS|PDO::FETCH_PROPS_LATE, $className);
            $statement = $this->query($sql, $params);               
            $result = $statement->fetchAll($this->_fetch_mode);
            $statement->closeCursor();
            return $result;
        } catch (PDOException $e) {
            $this->exceptionOutput($e);
        }
    }
}
4

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