Question

我已经编写了一些代码来检查2天是否过了两天，但它似乎没有用。

<?php
date_default_timezone_set('Europe/Amsterdam');

$_connection = mysqli_connect("localhost", "root", "root", "theater") or die("Error: " . mysqli_error());

$query = "SELECT * FROM Reservering";
$result = mysqli_query($_connection, $query);

while($row = mysqli_fetch_assoc($result)) {
    $res = strtotime($row['ReserveringsDatum']);
    echo date('d-m-y', $res);
}

mysqli_close($_connection);
?>

$ row ['ReserveringsDatum']是一个如下所示的日期：“07-01-14”（示例）。

出于某种原因，echo date('d-m-y', $res);向我展示了“14-01-07”，这只是被逆转的日期和年份。

修改对于那些想知道它是如何结束的人来说，这是工作代码：

<?php
date_default_timezone_set('Europe/Amsterdam');

$_connection = mysqli_connect("localhost", "root", "root", "theater") or die("Error: " . mysqli_error());

$query = "SELECT *, DATEDIFF(NOW(), DATE(ReserveringsDatum)) 'age' FROM Reservering WHERE DATEDIFF(NOW(), ReserveringsDatum) > 2 ";
$result = mysqli_query($_connection, $query);

while($row = mysqli_fetch_assoc($result)) {
    if($row['Betaalt'] == 'nee') {
        $query2 = "DELETE FROM Reservering WHERE `ReserveringID` = '".$row['ReserveringID']."'";
        mysqli_query($_connection, $query2);
    }
}

mysqli_close($_connection);


?>

Answer 1

试试这个

$res = strtotime($row['ReserveringsID']);
$limit = strtotime($row['ReserveringsID']) + strtotime("+2 day", $res);
var_dump($res); var_dump($limit);
if($limit > $res) {
    echo "2 days have passed";
} else {
    echo "2 days have not yet passed";
}

Answer 2

我认为你需要解决你的问题。

如果你想检查$ res是否超过两天，你必须将限制与当前时间进行比较，而不是$ res。

$res = strtotime($row['ReserveringsID']);
$limit = strtotime('+2 days', $res);

if($limit < time()) {
    echo "2 days have passed";
} else {
    echo "2 days have not yet passed";
}

Answer 3

你的问题就在这一行

$limit = strtotime($row['ReserveringsID']) + $2days;

您需要像这样添加2天

$res = strtotime($row['ReserveringsID']);
$limit = strtotime('+2 days', $res);

将日期添加2天的工作演示 https://eval.in/86632

How do I add 24 hours to a unix timestamp in php?

Adding days to a timestamp

Answer 4

如评论中所述，我会在SQL中进行选择。不需要选择所有行并在PHP中过滤它们。它在SQL中做得更好。

简单示例：

SELECT *, DATEDIFF(NOW(), ReserveringsDatum) 'age' FROM Reservering WHERE DATEDIFF(NOW(), ReserveringsDatum) > 2

确保reserveringsdatum是DATE，如果它是TIMESTAMP，则需要将其转换为DATE。

SELECT *, DATEDIFF(NOW(), DATE(ReserveringsDatum)) 'age' FROM Reservering WHERE DATEDIFF(NOW(), ReserveringsDatum) > 2

添加2天并进行比较

4 个答案: