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->commit();      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->commit();        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->commit();      die("成功!");    }    $pdo->rollback();    die("失败!");  } catch (PDOException $ex) {    echo($ex->getMessage());  }}