

Связанные таблицы по skills_id, нужно вывести ассоциативный массив в php ,я делаю так :
$db = Db::getconnection();
			$skillslist = [];
			$result = $db->query('SELECT * FROM skills LEFT OUTER JOIN about ON skills.skills_id = about.skills_id');
			$result -> execute();
			while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
				$skillslist[$row['skill_name']][] =$row;				
				
			}
			//$row = $result->FETCHALL(PDO::FETCH_COLUMN|PDO::FETCH_GROUP);
			
			return $skillslist;
выводится это:
    array(5) {
  ["frontend"]=>
  array(4) {
    [0]=>
    array(5) {
      ["skills_id"]=>
      string(1) "1"
      ["skill_name"]=>
      string(8) "frontend"
      ["about_id"]=>
      string(1) "1"
      ["about_name"]=>
      string(10) "html & css"
      ["about_val"]=>
      string(3) "100"
    }
    [1]=>
    array(5) {
      ["skills_id"]=>
      string(1) "1"
      ["skill_name"]=>
      string(8) "frontend"
      ["about_id"]=>
      string(1) "3"
      ["about_name"]=>
      string(11) "js & jquery"
      ["about_val"]=>
      string(2) "20"
    }
    [2]=>
    array(5) {
      ["skills_id"]=>
      string(1) "1"
      ["skill_name"]=>
      string(8) "frontend"
      ["about_id"]=>
      string(1) "4"
      ["about_name"]=>
      string(4) "sass"
      ["about_val"]=>
      string(2) "20"
    }
    [3]=>
    array(5) {
      ["skills_id"]=>
      string(1) "1"
      ["skill_name"]=>
      string(8) "frontend"
      ["about_id"]=>
      string(1) "5"
      ["about_name"]=>
      string(9) "bootstrap"
      ["about_val"]=>
      string(2) "18"
    }
  }
  ["backend"]=>
  array(4) {
    [0]=>
    array(5) {
      ["skills_id"]=>
      string(1) "2"
      ["skill_name"]=>
      string(7) "backend"
      ["about_id"]=>
      string(1) "6"
      ["about_name"]=>
      string(3) "php"
      ["about_val"]=>
      string(2) "20"
    }
    [1]=>
    array(5) {
      ["skills_id"]=>
      string(1) "2"
      ["skill_name"]=>
      string(7) "backend"
      ["about_id"]=>
      string(1) "7"
      ["about_name"]=>
      string(5) "mysql"
      ["about_val"]=>
      string(2) "25"
    }
    [2]=>
    array(5) {
      ["skills_id"]=>
      string(1) "2"
      ["skill_name"]=>
      string(7) "backend"
      ["about_id"]=>
      string(1) "8"
      ["about_name"]=>
      string(8) "composer"
      ["about_val"]=>
      string(2) "20"
    }
    [3]=>
    array(5) {
      ["skills_id"]=>
      string(1) "2"
      ["skill_name"]=>
      string(7) "backend"
      ["about_id"]=>
      string(1) "9"
      ["about_name"]=>
      string(7) "laravel"
      ["about_val"]=>
      string(2) "20"
    }
  }
  ["workflow"]=>
  array(4) {
    [0]=>
    array(5) {
      ["skills_id"]=>
      string(1) "3"
      ["skill_name"]=>
      string(8) "workflow"
      ["about_id"]=>
      string(2) "10"
      ["about_name"]=>
      string(3) "git"
      ["about_val"]=>
      string(2) "20"
    }
    [1]=>
    array(5) {
      ["skills_id"]=>
      string(1) "3"
      ["skill_name"]=>
      string(8) "workflow"
      ["about_id"]=>
      string(2) "11"
      ["about_name"]=>
      string(4) "gulp"
      ["about_val"]=>
      string(2) "20"
    }
    [2]=>
    array(5) {
      ["skills_id"]=>
      string(1) "3"
      ["skill_name"]=>
      string(8) "workflow"
      ["about_id"]=>
      string(2) "12"
      ["about_name"]=>
      string(5) "bower"
      ["about_val"]=>
      string(2) "20"
    }
    [3]=>
    array(5) {
      ["skills_id"]=>
      string(1) "3"
      ["skill_name"]=>
      string(8) "workflow"
      ["about_id"]=>
      string(2) "13"
      ["about_name"]=>
      string(3) "ssh"
      ["about_val"]=>
      string(2) "20"
    }
  }
}
Просто мне кажется что-то не то,потому что возникают кое какие трудности