[PHP] + [Neko] haxe.ds.ObjectMap fails with key being a String or null

[filt3rek]

Hej,

This simple example works everywhere but fails on PHP : spl_object_hash(): Argument #1 ($object) must be of type object, string given

class Main {
    public static function main() {
        var h = new haxe.ds.ObjectMap<Dynamic, Bool>();
            h.set( "foo" , true );
    }
}

Thanks for reading me