(PECL uopz 5, PECL uopz 6, PECL uopz 7)
uopz_set_property — Sets value of existing class or instance property
   Sets the value of an existing static class property, if class
   is given, or the value of an instance property (regardless whether the instance property already exists), if instance
   is given.
  
classThe name of the class.
instanceThe object instance.
propertyThe name of the property.
valueThe value to assign to the property.
No value is returned.
Example #1 Basic uopz_set_property() Usage
<?php
class Foo {
   private static $staticBar;
   private $bar;
   public static function testStaticBar() {
      return self::$staticBar;
   }
   public function testBar() {
      return $this->bar;
   }
}
$foo = new Foo;
uopz_set_property('Foo', 'staticBar', 10);
uopz_set_property($foo, 'bar', 100);
var_dump(Foo::testStaticBar());
var_dump($foo->testBar());
?>
The above example will output:
int(10)