Php 如何将时间与最近的计划时间进行比较
有人能帮我修复这个代码吗。我需要的是让当前时间与“from”列中最近保存的时间表进行比较 因为当前时间只是将其与第一个添加的计划进行比较 代码：Php 如何将时间与最近的计划时间进行比较,php,mysql,Php,Mysql,有人能帮我修复这个代码吗。我需要的是让当前时间与“from”列中最近保存的时间表进行比较 因为当前时间只是将其与第一个添加的计划进行比较 代码： 欢迎 什么是IMEI和NFC？您应该能够使用now（）将时间与当前时间进行比较。键入链接后，IMEI和NFC将从数据库中获取，它在数据库中具有相应的时间安排。一旦链接打开，它将比较当前时间和计划时间。但它只会与数据库中的第一个计划进行比较，如果您循环$teacher->fetch，您将获得所有记录。。。或者，您应该能够在SQL中执行逻辑。这是我们数据
欢迎
IMEINFCnow（）$teacher->fetch <?php
//Include the database configuration
include 'config.php';
//Get the data of the selected teacher
$teacher = $dbconnect->prepare("SELECT * FROM time WHERE IMEI = ? AND NFC = ?");
$teacher->bindValue(1,$_GET['IMEI']);
$teacher->bindValue(2,$_GET['NFC']);
$teacher->execute();
//Get the data
$time = $teacher->fetch();
//Store the current time
$current_time = new DateTime();
//Placeholder variables
$time_difference = 0;
$remark = "";
//If there is such a teacher let the teacher enter
if(!empty($time))
{
//Get the time difference
$time_difference = round( (strtotime($current_time->format('H:i:s')) - strtotime($time['From'])) / 60 );
//Check if the professor is late or not
//If the time difference is negative he/she is early
if($time_difference < 0)
{
$remark = 'Sir why are you so early?';
}
//If the prof is on time which is 0 time difference or less than 15 minutes
else if($time_difference == 0 || $time_difference < 15)
{
$remark = "Sir it's a miracle you are on time";
}
//Oh come on why are you so late Sir?Porn marathon at night?
else if($time_difference == 15 || $time_difference > 15)
{
$remark = 'Sir why are you late?';
}
$time_in = $dbconnect->prepare("INSERT INTO time_in (teacher_id,name,NFC,IMEI,time_in,remarks) VALUES (?,?,?,?,?,?)");
$time_in->bindValue(1,$time['teacher_id']);
$time_in->bindValue(2,$time['name']);
$time_in->bindValue(3,$time['NFC']);
$time_in->bindValue(4,$time['IMEI']);
$time_in->bindValue(5,$current_time->format('H:i:s'));
$time_in->bindValue(6,$remark);
$time_in->execute();
}
?>
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Welcome!</title>
</head>
<body>
<h1>
<?php
//If there is such a teacher,welcome him/her
if(!empty($time))
{
echo 'Welcome '.$time['name'].'! Your NFC is '.$time['NFC'];
echo '</br>';
echo 'Time in at: '.$current_time->format('H:i:s');
//This is just a temporary display to show the time difference for testing.Kindly delete it later
echo '</br>';
echo 'Time difference: '.$time_difference;
//Display remark
echo '</br>';
echo 'Remark:'.$remark;
}
else
{
echo 'You are not registered.';
}
?>
</h1>
</body>
</html>