如何動態地爲PHP中的類屬性賦值？

Question

我想動態地在類屬性中分配一個值（即使用變量引用它）。

#Something like: 
setPropValue($obj, $propName, $value); 

Answer 1

$obj->$propName = $value; 

Answer 2

是這樣的？

$myClass = new stdClass(); 
$myProp = 'foo'; 
$myClass->$myProp = 'bar'; 
echo $myClass->foo; // bar 
echo $myClass->$myProp; // bar 

Answer 3

如果你想爲static members做到這一點，你可以使用可變變量：

class Foo 
{ 
    public static $foo = 'bar'; 
} 

// regular way to get the public static class member 
echo Foo::$foo; // bar 

// assigning member name to variable 
$varvar = 'foo'; 
// calling it as a variable variable 
echo Foo::$$varvar; // bar 

// same for changing it 
Foo::$$varvar = 'foo'; 
echo Foo::$$varvar; // foo