[De4dpOol]

pawn Код:

new toptime = 0;//creating a variable with 0 value
new topid = -1;//creating a variable with -1 value (as playerid can be 0 too so we are using -1)

for(new i=0; i < MAX_PLAYERS; i++)
{
    if(toptime < YourTimeStoringVariable[i])
    {
        toptime = YourTimeStoringVariable[i];
        topid = i;
    }
}
//the topid is the playerid with most time played (check if topid is not -1)

Here, untested.