爲什麼我的foreach不會工作？

Question

$subSpecialties = $this->_db->get('users_subspecialties',array('user_id', '=', $this->_data->id)); 

print_r($subSpecialties); 

foreach ($subSpecialties as $subSpecialty) { 
    echo "THIS CODE IS GENERATED FROM INSIDE FOREACH"; 
} 

第一行會從我的users_subspecialties表

然後我用print_r檢查發現記錄的記錄。

輸出如下所示：

DB Object ([_pdo:DB:private] => PDO Object () [_query:DB:private] 
=> PDOStatement Object ([queryString] => SELECT * FROM 
users_subspecialties WHERE user_id = ?) [_error:DB:private] => 
[_results:DB:private] => Array ([0] => stdClass Object ([user_id] 
=> 1 [subspecialty_id] => 2) [1] => stdClass Object ([user_id] => 1 
[subspecialty_id] => 3)) [_count:DB:private] => 2) 

最後一行是我的for-each;它應該運行，因爲有2個記錄找到，你可以看到與print_r輸出，但它不會echo裏面的代碼。

有人能告訴我什麼似乎是問題嗎？提前致謝。

Answer 1

$subSpecialties = $this->_db->get('users_subspecialties',array('user_id', '=', $this->_data->id)); 

print_r($subSpecialties); 

foreach ($subSpecialties->results() as $subSpecialty) { 
    echo "THIS CODE IS GENERATED FROM INSIDE FOREACH"; 
} 

Answer 2

如果反應對象，你得到這樣的：

foreach ($subSpecialties as $subSpecialty) { 
    echo $subSpecialty->user_id; 
    echo '<br/>'; 
    echo $subSpecialty->subspecialty_id; 
} 

如果反應陣列然後

foreach ($subSpecialties as $subSpecialty) { 
    echo $subSpecialty[user_id]; 
    echo '<br/>'; 
    echo $subSpecialty[subspecialty_id]; 
}