Rumah > Artikel > pembangunan bahagian belakang > php如何实现取消订单？
php如何实现取消订单？
- coldplay.xixiasal
- 2020-07-10 10:31:243226semak imbas
php实现取消订单的方法：首先【order_status】为1时代表客户下单确定；然后为2时代表客户已付款；最后为0时代表订单已取消，运用swoole的异步毫秒定时器。
php实现取消订单的方法：
一、业务场景：当客户下单在指定的时间内如果没有付款，那我们需要将这笔订单取消掉，比如好的处理方法是运用延时取消，这里我们用到了swoole，运用swoole的异步毫秒定时器不会影响到当前程序的运行。
二、说明，order_status为1时代表客户下单确定，为2时代表客户已付款，为0时代表订单已取消(正是swoole来做的)，下面的代表我没有用框架，比较纯的PHP代表方便理解和应用
三、举例说明，库存表csdn_product_stock产品ID为1的产品库存数量为20，产品ID为2的库存数量为40，然后客户下单一笔产品ID1减10，产品ID2减20，所以库存表只够2次下单，例子中10秒后自动还原库存，如下图：
图解：
1、第一次下完单产品ID1库存从20减到了10，产品ID2库存从40减到了20；
2、第二次下完单产品ID的库存为0了，产品ID2的库存也为0了；
3、第三次下单时，程序提示Out of stock；
4、过了10秒钟(每个订单下单后往后推10秒)，客户两次下单，由于没有付款(csdn_order表的order_status为1)，产品1和产品2的库存被还原了(csdn_order表的order_status变为0)，客户又可以继续下单了
1、所需要sql数据库表
DROP TABLE IF EXISTS `csdn_order`; CREATE TABLE `csdn_order` ( `order_id` int(10) unsigned NOT NULL AUTO_INCREMENT, `order_amount` float(10,2) unsigned NOT NULL DEFAULT '0.00', `user_name` varchar(64) CHARACTER SET latin1 NOT NULL DEFAULT '', `order_status` tinyint(2) unsigned NOT NULL DEFAULT '0', `date_created` datetime NOT NULL, PRIMARY KEY (`order_id`) ) ENGINE=InnoDB AUTO_INCREMENT=0 DEFAULT CHARSET=utf8; DROP TABLE IF EXISTS `csdn_order_detail`; CREATE TABLE `csdn_order_detail` ( `detail_id` int(10) unsigned NOT NULL AUTO_INCREMENT, `order_id` int(10) unsigned NOT NULL, `product_id` int(10) NOT NULL, `product_price` float(10,2) NOT NULL, `product_number` smallint(4) unsigned NOT NULL DEFAULT '0', `date_created` datetime NOT NULL, PRIMARY KEY (`detail_id`), KEY `idx_order_id` (`order_id`) ) ENGINE=InnoDB AUTO_INCREMENT=0 DEFAULT CHARSET=utf8; DROP TABLE IF EXISTS `csdn_product_stock`; CREATE TABLE `csdn_product_stock` ( `auto_id` int(10) unsigned NOT NULL AUTO_INCREMENT, `product_id` int(10) NOT NULL, `product_stock_number` int(10) unsigned NOT NULL, `date_modified` datetime NOT NULL, PRIMARY KEY (`auto_id`), KEY `idx_product_id` (`product_id`) ) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8; INSERT INTO `csdn_product_stock` VALUES ('1', '1', '20', '2018-09-13 19:36:19'); INSERT INTO `csdn_product_stock` VALUES ('2', '2', '40', '2018-09-13 19:36:19');
2、config.php
<?php $dbHost = "192.168.0.110"; $dbUser = "root"; $dbPassword = "123"; $dbName = "test"; ?>
3、<strong>order_submit.php</strong>
<?php
require("config.php");
try {
$pdo = new PDO("mysql:host=" . $dbHost . ";dbname=" . $dbName, $dbUser, $dbPassword, array(PDO::ATTR_PERSISTENT => true));
$pdo->setAttribute(PDO::ATTR_AUTOCOMMIT, 1);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$orderInfo = array(
'order_amount' => 10.92,
'user_name' => 'yusan',
'order_status' => 1,
'date_created' => 'now()',
'product_lit' => array(
0 => array(
'product_id' => 1,
'product_price' => 5.00,
'product_number' => 10,
'date_created' => 'now()'
),
1 => array(
'product_id' => 2,
'product_price' => 5.92,
'product_number' => 20,
'date_created' => 'now()'
)
)
);
try{
$pdo->beginTransaction();//开启事务处理
$sql = 'insert into csdn_order (order_amount, user_name, order_status, date_created) values (:orderAmount, :userName, :orderStatus, now())';
$stmt = $pdo->prepare($sql);
$affectedRows = $stmt->execute(array(':orderAmount' => $orderInfo['order_amount'], ':userName' => $orderInfo['user_name'], ':orderStatus' => $orderInfo['order_status']));
$orderId = $pdo->lastInsertId();
if(!$affectedRows) {
throw new PDOException("Failure to submit order!");
}
foreach($orderInfo['product_lit'] as $productInfo) {
$sqlProductDetail = 'insert into csdn_order_detail (order_id, product_id, product_price, product_number, date_created) values (:orderId, :productId, :productPrice, :productNumber, now())';
$stmtProductDetail = $pdo->prepare($sqlProductDetail);
$stmtProductDetail->execute(array(':orderId' => $orderId, ':productId' => $productInfo['product_id'], ':productPrice' => $productInfo['product_price'], ':productNumber' => $productInfo['product_number']));
$sqlCheck = "select product_stock_number from csdn_product_stock where product_id=:productId";
$stmtCheck = $pdo->prepare($sqlCheck);
$stmtCheck->execute(array(':productId' => $productInfo['product_id']));
$rowCheck = $stmtCheck->fetch(PDO::FETCH_ASSOC);
if($rowCheck['product_stock_number'] < $productInfo['product_number']) {
throw new PDOException("Out of stock, Failure to submit order!");
}
$sqlProductStock = 'update csdn_product_stock set product_stock_number=product_stock_number-:productNumber, date_modified=now() where product_id=:productId';
$stmtProductStock = $pdo->prepare($sqlProductStock);
$stmtProductStock->execute(array(':productNumber' => $productInfo['product_number'], ':productId' => $productInfo['product_id']));
$affectedRowsProductStock = $stmtProductStock->rowCount();
//库存没有正常扣除，失败，库存表里的product_stock_number设置了为非负数
//如果库存不足时，sql异常：SQLSTATE[22003]: Numeric value out of range: 1690 BIGINT UNSIGNED value is out of range in '(`test`.`csdn_product_stock`.`product_stock_number` - 20)'
if($affectedRowsProductStock <= 0) {
throw new PDOException("Out of stock, Failure to submit order!");
}
}
echo "Successful, Order Id is：" . $orderId ."，Order Amount is：" . $orderInfo['order_amount'] . "。";
$pdo->commit();//提交事务
//exec("php order_cancel.php -a" . $orderId . " &");
pclose(popen('php order_cancel.php -a ' . $orderId . ' &', 'w'));
//system("php order_cancel.php -a" . $orderId . " &", $phpResult);
//echo $phpResult;
}catch(PDOException $e){
echo $e->getMessage();
$pdo->rollback();
}
$pdo = null;
} catch (PDOException $e) {
echo $e->getMessage();
}
?>4、<strong>order_cancel.php</strong>
<?php
require("config.php");
$queryString = getopt('a:');
$userParams = array($queryString);
appendLog(date("Y-m-d H:i:s") . "\t" . $queryString['a'] . "\t" . "start");
try {
$pdo = new PDO("mysql:host=" . $dbHost . ";dbname=" . $dbName, $dbUser, $dbPassword, array(PDO::ATTR_PERSISTENT => true));
$pdo->setAttribute(PDO::ATTR_AUTOCOMMIT, 0);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
swoole_timer_after(10000, function ($queryString) {
global $queryString, $pdo;
try{
$pdo->beginTransaction();//开启事务处理
$orderId = $queryString['a'];
$sql = "select order_status from csdn_order where order_id=:orderId";
$stmt = $pdo->prepare($sql);
$stmt->execute(array(':orderId' => $orderId));
$row = $stmt->fetch(PDO::FETCH_ASSOC);
//$row['order_status'] === "1"代表已下单，但未付款，我们还原库存只针对未付款的订单
if(isset($row['order_status']) && $row['order_status'] === "1") {
$sqlOrderDetail = "select product_id, product_number from csdn_order_detail where order_id=:orderId";
$stmtOrderDetail = $pdo->prepare($sqlOrderDetail);
$stmtOrderDetail->execute(array(':orderId' => $orderId));
while($rowOrderDetail = $stmtOrderDetail->fetch(PDO::FETCH_ASSOC)) {
$sqlRestoreStock = "update csdn_product_stock set product_stock_number=product_stock_number + :productNumber, date_modified=now() where product_id=:productId";
$stmtRestoreStock = $pdo->prepare($sqlRestoreStock);
$stmtRestoreStock->execute(array(':productNumber' => $rowOrderDetail['product_number'], ':productId' => $rowOrderDetail['product_id']));
}
$sqlRestoreOrder = "update csdn_order set order_status=:orderStatus where order_id=:orderId";
$stmtRestoreOrder = $pdo->prepare($sqlRestoreOrder);
$stmtRestoreOrder->execute(array(':orderStatus' => 0, ':orderId' => $orderId));
}
$pdo->commit();//提交事务
}catch(PDOException $e){
echo $e->getMessage();
$pdo->rollback();
}
$pdo = null;
appendLog(date("Y-m-d H:i:s") . "\t" . $queryString['a'] . "\t" . "end\t" . json_encode($queryString));
}, $pdo);
} catch (PDOException $e) {
echo $e->getMessage();
}
function appendLog($str) {
$dir = 'log.txt';
$fh = fopen($dir, "a");
fwrite($fh, $str . "\n");
fclose($fh);
}
?>相关学习推荐：PHP编程从入门到精通
Atas ialah kandungan terperinci php如何实现取消订单？. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!
Kenyataan：
Kandungan artikel ini disumbangkan secara sukarela oleh netizen, dan hak cipta adalah milik pengarang asal. Laman web ini tidak memikul tanggungjawab undang-undang yang sepadan. Jika anda menemui sebarang kandungan yang disyaki plagiarisme atau pelanggaran, sila hubungi admin@php.cn
Artikel sebelumnya：ubuntu下php如何安装curlArtikel seterusnya：php读取txt乱码怎么办