SQL List Problem

There are 5 names for 1 player but the message seems to be one

Sample:

PHP:

SQL Table

   p1       p2
Rexius - blabla1
Rexius - blabla2
Rexius - blabla3

player send messages > blabla1,


I want messages > blabla1, blabla2, blabla3

PHP:

                        $msg = null;
                        foreach($this->getPlayer($player) as $table2 => $p) {
                            if($table2 == 'p2') {
                                $msg .= "$p, ";
                            }
                        }
                        $sender->sendMessage($msg);
                        return;

// and

        public function getPlayer($p1) {
            if($this->provider == "SQL") {
                $a = $this->db->query("SELECT * FROM player1 WHERE p1='$p1';");
                $b = $a->fetchArray(SQLITE3_ASSOC);
                return $b;
            }
            }
        }

Bad english, sorry

PHP:

if($this->db->error !== null){
   $this->getLogger()->warning("MySQL Error $this->db->errno."#: ".$this->db->error);
   return;
}
$this->db->fetchAssoc($a);


PHP:

        public function getPlayer($p1) {
            if($this->provider == "SQL") {
                $a = $this->db->query("SELECT * FROM player1 WHERE p1='$p1';");
                $b = $a->fetchArray(SQLITE3_ASSOC);
                return $b;
                    if($this->db->error !== null){
                        $this->getLogger()->warning("MySQL Error ".$this->db->error);
                        return;
                    }
                $this->db->fetchAssoc($a);
            }
            }
        }

No error

PHP:

$sql = "SELECT * FROM player1 WHERE p1='$p1';";
if(!$r = $this->db->query($sql)){
   $this->getLogger()->warning("MySQL Error ".$this->db->errorno."#: ".$this->db->error);
}


No error
I want to print side by side

http://php.net/manual/en/function.implode.php