循環訪問對象屬性數組時，如何返回給定現有鍵的數組值？

Question

如果$myObj是：

$myObj = new stdClass(); 
$myObj = array(1 => 100, 2 => 200, 3 => 300); 
echo $myObj[1]; // returns 100, as expected 

但通過性的這樣一個數組迭代時：

$properties_array = array('property_one','property_two'); 
// and $myObj looks like $myObj->property_one = array(0 => 12345); 
foreach ($properties_array as $property) { 
    echo $property; 
    // returns property name, as expected 

    print_r($myObj->$property); 
    // returns an array, as expected (ex. Array([0] => 12345)) 

    echo $myObj->$property[0]; 
    // expected '12345', instead throws an error: 'Undefined property: stdClass::$myObj' 
} 

爲什麼會print_r($myObj->$property);工作不如預期，但echo $myObj->$property[0];拋出一個錯誤？

Answer 1

嘗試做echo $myObj->{$property}[0];

Answer 2

使用鍵和價值觀念

foreach ($properties_array as $key=>$property) { 
     echo $property;//100 
     echo $key;//1 

    } 

，同時呼應性病類的對象，無法訪問對象