PHP基于PDO扩展操作mysql数据库示例

//查单条
function get_sub_product()
{
  $res_zz = $pdo->query("SELECT id FROM content WHERE is_publish = 0 LIMIT 1;");
  $rep = $res_zz->fetch();
}
//查多条
function get_sub_product()
{
  $dsn = 'mysql:host=localhost;dbname=bwdb';
  $pdo = new PDO($dsn, 'root', 'root');
  $pdo->query('set names utf8');
  $res_zz = $pdo->query("SELECT product_id FROM sub_product WHERE 1= 1;");
  $rep = $res_zz->fetchAll();
  $product_id_arr = array();
  foreach ($rep as $v) {
    $product_id_arr[] = $v['product_id'];
  }
  return $product_id_arr;
}

function add()
{
  try {
    $pdo->beginTransaction();
    $reb = $pdo->prepare("INSERT INTO `content` (`id`,`content`) VALUES(:version_id,:content);");
    $reb->bindParam(':version_id', $version_id, PDO::PARAM_INT);
    $reb->bindParam(':content', $content, PDO::PARAM_STR);
    $type_id = 1;
    $reb->bindParam(':type_id', $type_id, PDO::PARAM_INT);
    $reb->bindParam(':cdate', $time, PDO::PARAM_STR);
    $reb->bindParam(':mdate', $time, PDO::PARAM_STR);
    if ($reb->execute() > 0) {
      $pdo->mit();
      die("成功!");
    }
    $pdo->rollback();
    die("失败!");
  } catch (PDOException $ex) {
    echo($ex->getMessage());
  }
}
function add($res_arr)
{
  $dsn = 'mysql:host=localhost;dbname=db';
  $pdo = new PDO($dsn, 'root', 'root');
  $pdo->query('set names utf8');
  $value = '';
  date_default_timezone_set("Asia/Shanghai"); //时区
  $time = date('Y-m-d h:i:s');
  foreach ($res_arr as $k => $v) {
    $hash = md5($v['ProductID'] . "-" . $v['CategoryID'] . "-" . $v['CategoryName']);
    $value .= "('" . $v['ProductID'] . "','" . $v['CategoryID'] . "','" . $v['CategoryName'] . "','" . $v['ProductName'] . "','" . $v['Abbreviation'] . "','" . $v['SubscribeStatus'] . "','" . $v['ProductStatus'] . "','" .
      $v['BrandID'] . "','" . $v['BrandName'] . "','" . $v['TradeType'] . "','" . $v['ProductModel'] . "','" . $v['UPCCode'] . "','" . $v['Weight'] . "','" . $v['Summary'] . "','" .
      $v['LongDescription'] . "','" . $v['BuyNotice'] . "','" . $v['PackingList'] . "','" . $v['DefaultImage'] . "','" . $v['Keywords'] . "','" . $v['VendorID'] . "','" . $v['StoreID'] . "','" .
      $v['CurrentPrice'] . "','" . $v['AvailableQty'] . "','" . $hash . "','" . $time . "','" . $time . "'),";
  }
  $vv = substr($value, 0, strlen($value) - 1);
  try {
    $pdo->beginTransaction();
    if (!empty($vv)) {
      $reb = $pdo->prepare("REPLACE INTO `product_list` (`product_id`, `category_id`, `category_name`, `product_name`, `abbreviation`, `subscribe_status`, `product_status`, `brand_id`, `brand_name`, `trade_type`, "
        . "`product_model`, `upc_code`, `weight`, `summary`, `long_description`, `buy_notice`, `packing_list`, `default_image`, `keywords`, `vendor_id`, `store_id`, `current_price`, "
        . "`available_qty`, `hash`, `cdate`, `mdate`) VALUES $vv;");
      if ($reb->execute() > 0) {
        $pdo->mit();
        return 1;
      }
    }
  } catch (PDOException $ex) {
    $pdo->rollback();
  }
  return -1;
}

function update()
{
  try {
    $pdo->beginTransaction();
    $is_publish = 1;
    $req = $pdo->prepare("UPDATE `content` SET is_pub=:is_pub,mdate=:mdate WHERE id = :id;");
    $req->bindParam(':is_publish', $is_publish, PDO::PARAM_INT);
    $req->bindParam(':id', $version_id, PDO::PARAM_INT);
    $req->bindParam(':mdate', $time, PDO::PARAM_STR);
    if ($req->execute()) {
      $pdo->mit();
      die("成功!");
    }
    $pdo->rollback();
    die("失败!");
  } catch (PDOException $ex) {
    echo($ex->getMessage());
  }
}