Question

这是我的表：

CREATE TABLE IF NOT EXISTS `users` (
  `id` int(6) unsigned NOT NULL AUTO_INCREMENT,
  `mail` varchar(50) NOT NULL UNIQUE,
  `password` varchar(30) NOT NULL,
  `reg_date` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;

这是我在php代码中的查询：

$query = "INSERT INTO `users` (`email`,`psw`) VALUES ('".$email."','".$psw."')";
  $_SESSION["id"] = mysqli_insert_id($db_con);
  // get the date of this row and put it in $_SESSION["regdate"]

Answer 1

您只需使用mysqli_insert_id并选择已插入的行

即可

$query = "INSERT INTO `users` (`email`,`psw`) VALUES ('".$email."','".$psw."')";
mysqli_query($db_con, $query);
$_SESSION["id"] = mysqli_insert_id($db_con);

$query = "SELECT reg_date FROM `users` WHERE id='{$_SESSION["id"]}'";
$result = mysqli_query($db_con, $query);

$row = mysqli_fetch_array($result);
print_r($row);

或者您可以插入当前日期时间，这样您就不必再次查询以获取时间戳。

$dt = date('Y-m-d H:i:s');
$query = "INSERT INTO `users` (`email`,`psw`, reg_date) VALUES ('".$email."','".$psw."', '".$dt."')";
mysqli_query($db_con, $query);
echo $dt; // last date you have inserted.

Answer 2

是的，有。稍微更改插入语句：

$currentDate=date("Y-m-d H:i:s");//Get current date
$query = "INSERT INTO `users` (`email`,`psw`,`reg_date`) VALUES ('".$email."','".$psw."', '.$currentDate.')";//Save date, email and password to database
$_SESSION["id"] = mysqli_insert_id($db_con);//Get ID of the last row
$_SESSION["regdate"] = $currentDate;//Save it in session

重要

虽然您正在搜索如何在数据库和$_SESSION数组中插入当前日期，但您遇到了更大的问题。您的insert语句容易受到SQL注入攻击，这意味着您的应用程序存在安全问题。而不是使用字符串连接，使用PDO类和所谓的预准备语句。

示例：

$currentDate=date("Y-m-d H:i:s");//Get current date
$sql = "INSERT INTO users SET email=?, psw=?, reg_date = ?";
$q = $conn->prepare($sql);
$q->execute(array($email, $psw, $currentDate));
$_SESSION["id"] = mysqli_insert_id($db_con);//Get ID of the last row
$_SESSION["regdate"] = $currentDate;//Save it in session

它会起作用:)）

Answer 3

只需在插入后运行查询即可获取日期

query = "SELECT `reg_date` FROM `users` WHERE `id` = $_SESSION["id"]"

Answer 4

获取最后插入行的ID

$last_id = mysqli_insert_id($db_con);

然后，执行选择查询

select reg_date from users where id = $last_id;

Answer 5

你可以这样做，确保id应该是自动增量

SELECT reg_date FROM users ORDER BY id DESC LIMIT 0,1

有没有办法获取最后插入的行的日期？

5 个答案:

重要