php - mysqli perform multiple queries into foreach -

i wrote following code store data on mysql db. problem insert or update query executed once, first cycle. tryed find solution searching on stackoverflow , google without success. me.

foreach($data $val){              $result = $con->query('select id mytable name = "'.$val'"');             $row = $result->fetch_row();              if(isset($row[0]) ) $id =  $row[0];              if(!isset($id)) {                  $queryinsert = "insert mytable bla bla );";                  $result = $con->query($queryinsert);                  $id = $con->insert_id;             }             else {                  $queryupdate = "update mytable bla bla";                  $result = $con->query($queryupdate);             }              //other code , queries ...          } 

you check num_rows , insert or update

foreach($data $val){     $result = $con->query('select id mytable name = "'.$val.'"');     $num = $result->num_rows;      if($num){ //it exists -> update          $queryupdate = "update mytable set bla bla";         $resultupdate = $con->query($queryupdate);         $row = $result->fetch_assoc();         $id = $row['id'];      } else { //it doesnt exist insert          $queryinsert = "insert mytable values ( bla bla );";         $resultinsert = $con->query($queryinsert);         $id = $resultinsert->insert_id;     } }