Just make "player_to_kick" an array and add the found players:

PHP Code:
            players_to_kick = [];  // changed
            
player_warn undefined
            
players getentarray("player","classname"); 
            for(
i=0;i<players.size;i++) 
            { 
                
name getnormalname(players[i].name); 
                if(
name == name1 || isSubStr(namename1)) 
                    
players_to_kick[players_to_kick.size] = players[i]; // changed

            

            
// changed:
            
if(players_to_kick.size == 1) {
                
// only one, normal kick code
            
} else {
                
tmp "multiple players: ";
                for (
i=0i<players_to_kicki++)
                    
tmp += players_to_kick[i] + " ";
                
iprintlnbold(tmp);
            }