PHP a MariaDB

$sql = "INSERT INTO contacts (idname, comName, comAddress, comState, comCity, comPsc) VALUES ('$idname', '$name', '$', '$'')";
$vysledok = $mysqli->query($sql);
if (!$vysledok) { $chybadb="Chyba pri zápise do databázy. Kontaktujte správcu."; } else { $create_card="ok";} 

implode(); <-na zlepenie pola do jedneho stringu
array_keys(); <-nazvy
array_values(); <-hodnoty

  if(is_array($_POST)){   
    $postValueArr = array();
    foreach($_POST as $key=>$value){   
      $postValueArr[] = "'$value'";
      $postKeyArr[] = "$key";
    }
    $sql = "INSERT INTO contacts (";
    $sql .= implode(', ', $postKeyArr);
    $sql .= ") VALUES (";
    $sql .= implode(', ', $postValueArr);
    $sql .= ")";   
    $result = $mysqli->query($sql);
    if (!$result){{$create="no";}else{$create="ok";}
  }