Porkuyan began playing for the youth team of Kirovohrad's local club, Zvezda.
His form there attracted the attention of many top clubs, including Spartak Moscow and Dnipro, but he was eventually moved to Dynamo Kyiv.
On the strength of that first season, when he scored 7 goals, he was chosen by the head-coach of USSR national football team, Nikolai Morozov to travel to the 1966 FIFA World Cup.
Porkuyan earned 8 caps and scored 4 goals for the USSR national football team.
He is the only active player of FC Chornomorets Odesa to have featured in a World Cup team.