如何在PHP中為類屬性動態分配值？

Question

我想在類屬性中動態分配一個值（即使用變量引用它）。

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

Answer 1

$obj->$propName = $value;

Answer 2

如果要對靜態成員執行此操作，可以使用變量變量：

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

Answer 3

像這樣？

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