[Knappen]

This would be fairly easy with sscanf and y_commands or ZCMD.

PHP Code:

CMD:id(playerid, params[])
{
    // Creating the variables we will need
    new String[128], Target, TargetName[MAX_PLAYER_NAME];
    
    // Checking that all the params are there, and that everything is in order
    if(sscanf(params, "u", Target)) SendClientMessage(playerid, COLOR_INFO, "* Usage: /id [playerid/PartOfName]");
    else    // If everything is in order, this will happen
    {
        // Checking that the player is online and that the ID is valid
        if(Target != INVALID_PLAYER_ID)        
        {
            // Getting player name into the formerly created string
            GetPlayerName(Target, TargetName, sizeof(TargetName));    
            
            // Formatting it to how you wanted it. Player_Name [ID:10]
            format(String, sizeof(String), "%s [ID:%d]", TargetName, Target);    
            
            // Sending the message
            SendClientMessage(playerid, COLOR_INFO, String);                    
        }
    }
    return 1;                                                                
} 


EDIT: The command for getting phone number is fairly similar. Just edit the name of the command and edit the format variables to how you want them.

PHP Code:

format(String, sizeof(String), "%d - %s [ID:%d]", PhoneNumberVariable, TargetName, Target);
// Will output 1337 - Player_Name [ID:10]