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Getting static vars




12 December 2008 at 4:00am 4085 Posts

What's the best way to get the value of a static var on an unknown class? Silverstripe uses a pretty clever (albeit ugly) technique that looks something like:

$var = eval("return $className::\$my_var;");

But then in other places i see:

$var = $this->stat('my_var');

And still in other places, I see:

$class = new ReflectionClass('my_class');
$var = $class->getProperty('my_var');

Which is the preferred method? Are a lot of these legacy techniques to support older PHP versions? Seems like it should be the same every time.