使用变量访问对象属性

Question

I have an object full of arrays, I am able to change an element in an array with this code

$i = 0;
$object->property[$i] = "some value";

however the following code does not change the value and returns no errors.

 $i = 0;
 $propertyname = "property";
 $object->$propertyname[$i] = "some value";

Answer 1

Try:

 $i = 0;
 $propertyname = "property";
 $object->{$propertyname}[$i] = "some value";

Answer 2

In order to set a property you should use functions. This prevents to set properties to invalid values. What you want to achieve can be done by a workaround:

public function setPoperty($propName,$Value)
{
   switch($propName)
   {
      case ('firstName'):
         $this->firstName=$Value;
         break;
      case ('UserMode'):
         if ($Value>0)       //prevent from setting to an undesired value
         { $this->UserMode=$Value}
         break;
   }
}

This is just written from scratch. But you should get the idea.

Answer 3

Seems like your trying to edit data encapsulated in object by procedural style

E: try

$object->$propertyname[$otherprop['name']$i];