Sági-Kazár Márk

Using the CLASS constant generally works, however it fails if used in a child class of a class which uses a trait:

trait ClassDetector
{
    public function getClassName()
    {
        return __CLASS__;
    }
}

class Foo
{
    use ClassDetector;
}

class Bar extends Foo
{
}

$bar = new Bar;

// returns Foo
$bar->getClassName();

It was a big surprise to me, but reflection is actually much faster than the other two.

Here is the result:

Method Name      Iterations    Average Time      Ops/second
--------------  ------------  --------------    -------------
testExplode   : [10,000    ] [0.0000020221710] [494,518.01547]
testSubstring : [10,000    ] [0.0000017177343] [582,162.19968]
testReflection: [10,000    ] [0.0000015984058] [625,623.34059]

I have to mention that if I run the tests only once (no iterations, but several runs and making an avarage), the substring solution is the winner in speed. (This is probably because reflection is cached)

Actually the original solution is the slowest of all.