php如何实现取消订单？-PHP问题

资源魔 2020-07-12 21:13:23 34 0

php完成勾销定单的办法：起首【order_status】为1时代表客户下单确定；而后为2时代表客户已付款；最初为0时代表定单已勾销，运用swoole的异步毫秒按时器。

php完成勾销定单的办法：

1、营业场景：当客户下单正在指定的工夫内假如不付款，那咱们需求将这笔定单勾销掉，比方好的解决办法是运用延时勾销，这里咱们用到了swoole，运用swoole的异步毫秒按时器没有会影响到以后顺序的运转。

2、阐明，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时代表定单已勾销(恰是swoole来做的)，上面的代表我不用框架，比拟纯的PHP代表不便了解以及使用

3、举例阐明，库存表csdn_product_stock产物ID为1的产物库存数目为20，产物ID为2的库存数目为40，而后客户下繁多笔产物ID1减10，产物ID2减20，以是库存表只够2次下单，例子中10秒后主动复原库存，以下图：

图解：

一、第一次下完单产物ID1库存从20减到了10，产物ID2库存从40减到了20；

二、第二次下完单产物ID的库存为0了，产物ID2的库存也为0了；

三、第三次下单时，顺序提醒Out of stock；

四、过了10秒钟(每一个定单下单后日后推10秒)，客户两次下单，因为不付款(csdn_order表的order_status为1)，产物1以及产物2的库存被复原了(csdn_order表的order_status变成0)，客户又能够持续下单了

一、所需求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');

二、config.php

<?php
$dbHost = "192.168.0.110";
$dbUser = "root";
$dbPassword = "123";
$dbName = "test";
?>

三、order_submit.php

<?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();//开启事务解决
 
$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();
 
//库存不失常扣除了，失败，库存内外的product_stock_number设置了为非正数
//假如库存有余时，sql异样：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->co妹妹it();//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();
}
?>

四、order_cancel.php

<?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();//开启事务解决
 
$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，咱们复原库存只针对未付款的定单
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->co妹妹it();//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);
}
?>