Kingdom Hearts How did King Mickey get behind the Door to Darkness?

Um...my title says it all: How did King Mickey get behind the Door to Darkness?

 

***Theory***
the king got behind the door after talking to Riku.
Riku started to look for the person of that voice but he got trapped when Ansem summoned Kingdom Hearts.
Riku found himself surrounded by darkness so the king helped him (my guess with the dream sword). KH chose the king to be its keyblade wielder (gold) . i think that because if he acquired the key b4 that, he would have saved Riku and he wouldt be there but trying to follow sora in order to close KH b4 Ansem summoning.

i hope that gives u n idea of what happened... if u think about it fora long time, you might be able to come with a hekka better theory than mine! lol


---Khilango

 

Riku and the King's hearts where behind the door where Kingdom Hearts was.