How to tag two Players in one /testfor command? [duplicate]

I'm searching how to tag two Players using one /testfor command. I'm actually using this command which works for one person :

/testfor @a[name=!<pseudo>,r=15]

But it doesn't work for two Players. Is it possible?

Solution 1:

First, create a dummy scoreboard objective:

/scoreboard objectives add selectMe dummy  

Then, add 2 players to the "selectMe":

/scoreboard players set @e[name=Name1] selectMe 1  
/scoreboard players set @e[name=Name2] selectMe 1  

Now you can enter your command:

/testfor @a[score_selectMe_min=1,r=15]  

or you can use this for an opposite effect:

/testfor @a[score_selectMe=0,r=15]  

Help gotten from here