The youngster got to make his full debut during a 3-2 loss at the Emirates Stadium on Wednesday.
While Palace were not able to hold onto a 1-0 lead that they gained in the first half, the young defender will never forget this night.
"I found out today I was playing, in the team meeting," Kporha said.
"So yeah, it was good news for me. At first I thought no way, but I was just excited to show what I could do.
"I thought I was doing well in training, and I’ve got the chance to prove myself out there. It was a good moment for me and a joy to play against one of the best teams in the world.
"It hasn’t really sunk it yet really tonight. But I’ve tried to enjoy it, it was a really good experience for me."
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