我为一家出租车公司建立了一个预订表，它运行良好，但我遇到了用户预订到期太早的问题。
由于整个表格有点长，我首先想确保用户不会试图提前一个小时预订，而不必填写整个表格。
这就是我到目前为止所想到的，但它根本不起作用：
<?php
//Set local time zone.
date_default_timezone_set('America/New_York');
//Get current date and time.
$current_time = date('Y-m-d H:i:s');
//Set reservation time variable
$res_datetime = $_POST['res_datetime'];
//Set event time.
$event_time = strtotime($res_datetime);
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Check Date and Time</title>
</head>
<?php
//Check to be sure reservation time is at least one hour in the future.
if (($current_time - $event_time) <= (3600))
{
echo "You must make a reservation at least one hour ahead of time.";
}
?>
<form name="datetime" action="" method="post">
<input name="res_datetime" type="datetime-local" id="res_datetime">
<input type="submit">
</form>
<body>
</body>
</html>
如何创建验证检查以确保预订的日期和时间至少提前一小时？
如果你这样做（添加回显线），你会看到一个大问题，你混合了两种不同的日期类型echo "current: $current_time Event: $event_time";
if (($current_time - $event_time) <= (3600))
好吧，我想明白了。以下是我的想法：
<?php
//Set time zone:
date_default_timezone_set('America/New_York');
//Set current time:
$current_time = date("Y-m-d H:i:s");
//Convert current time to timestamp:
$current_timestamp = strtotime($current_time);
//Set the minimum amount of time in advance a reservation can be made:
$min_time = strtotime("+1 hour", strtotime($current_time));
//Set event date:
$event_date = $_POST['event_date'];
//Set event time:
$event_time = $_POST['event_time'];
//Convert event time to timestamp:
$event_timestamp = strtotime("$event_date . $event_time");
//Set availability:
//If required fields are set and validated:
if (isset($event_date, $event_time)) {
//If reservation time is made in the past:
if ($event_timestamp < $min_time && $event_timestamp < $current_timestamp) {
$availability = "in_the_past";
//If reservation time is less than the required amount of time in advance:
} elseif ($event_timestamp > $current_time && $event_timestamp < $min_time) {
$availability = "too_soon";
//If a reservation is made for when no one may be checking email in time:
} elseif ($event_timestamp > strtotime('today 8:00pm') && $event_timestamp < strtotime('tomorrow 6:00am')) {
$availability = "unavailable";
} else {
$availability = "available";
}
再次感谢大家的帮助。