PHP将日期与今天的日期进行比较 [英] PHP Comparing a date to todays date

问题描述

我正尝试以 mm-yy 的格式获取信用卡的到期日期，并查看该日期是否已过，所以我知道信用卡是否已过期。如果已过期，则会在< tr>

I am trying to take a credit card expiry date in the format of mm-yy and see if that date has passed so I know if the credit card has expired. If it has expired, a class of expired is inserted on the <tr>

问题
我的代码导致检查示例日期为05/16，脚本说该卡显然没有过期。一岁。

The problem My code results in a sample date of 05/16 being checked, and the script says that the card has not expired when obviously this card is a year old.

我的代码

<?php foreach($card_historys as $card_history){ 
    $expired = "";
    $date = strtotime($card_history->expire); //Returns a date in mm/yy
    $noww = strtotime(date('m/y'));

    echo "expire: ".$date." / now: ".$noww."<br>";

    if($date < $noww){$expired = 'expired';}
  ?>
  <tr class="<?php echo $expired; ?>">

感谢进阶人员，我尝试过搜寻，但没有一种解决方案适合我的需求

Thanks in advanced, I have tried searching around and none of the solutions seem to be appropriate for what I'm doing.

推荐答案

在使用PHP的内置日期功能时，您需要确保使用的是有效的日期时间格式。否则， strtotime（）将返回 false 和 DateTime（）会引发异常。

When using PHP's built in date functionality, you need to make sure you are using a valid datetime format. Otherwise strtotime() will return false and DateTime() will throw an exception.

要使用非标准日期时间格式，可以使用 DateTime :: createFromFormat（） 来解析日期时间字符串并返回 DateTime（） 对象，您可以从中获取Unix时间戳，将日期转换为另一种格式，或将其与其他 DateTime 对象进行比较。

To work with non-standard datetime formats you can use DateTime::createFromFormat() to parse the datetime string and return a DateTime() object from which you can get a Unix Timestamp, convert the date into another format, or use it to compare to other DateTime objects.

// Date separated by dots
$date01 = \DateTime::createFromFormat('Y.m.d', '2017.04.18');

// Date with no separator
$date02 = \DateTime::createFromFormat('Ymd', '20170418');

// Get Unix timestamp
$timestamp = $date01->getTimestamp();

// Get MySQL format (ISO-8601)
$mysqlDate = $date02->format('Y-m-d');

因此，对于您的问题，您可以执行以下操作：

So for your issue, you would do the following:

$expires = \DateTime::createFromFormat('m/y', $card_history->expire);
$today   = new \DateTime();

if($expires < $today){$expired = 'expired';}

另请参见：

• 在PHP中将一种日期格式转换为另一种日期格式


• 在PHP中使用比较运算符比较DateTime对象

• Convert one date format into another in PHP
• Compare DateTime objects with comparison operators in PHP

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