Example of comparing time size in PHP, php time size example_PHP tutorial

Comparison time size example in PHP, php time size example

How about the time comparison of Shenma series PHP?

The simplest example is to compare two times using the greater than or less sign. Sometimes when we design a program, we need to control the user to operate a certain function only within a certain time period, and not allowed in other time periods.

For example, I have a website that publishes messages. I publish messages on this website, and then I send them to thousands of users through this message group. According to common practice, once a message is released, it should be immediately sent to thousands of users. In this way, as soon as there is the latest news, users will receive text messages on their mobile phones as soon as possible. However, here comes the problem. For example, if I publish information late at night or early in the morning, I will be XXOOed by all users.

So, time comparison can be used here. If it is published during the day, it will be blocked at night. Let’s assume that the daytime period is from seven in the morning (it is estimated that many people are not awake at seven) to six in the afternoon, then we can do this.

Copy code The code is as follows:

/**
* PHP time comparison
​*/
// Define the start time. Note that the time is in string format, so it must be enclosed in quotation marks. Otherwise, don’t come to me if you get an error. In addition, the colon inside must be an English colon
$start_time = '7:00';

// Define the end time. Don’t ask me why six o’clock in the afternoon is written as eighteen o’clock. I will suggest that you re-read elementary school
$end_time = '18:00';

// To get the current time period, I won’t talk nonsense about the use of date() function. If you don’t understand, just read previous articles or google
$now_time = date('H:i');

//Judge
if( $start_time<=$now_time && $end_time>=$now_time ){
echo 'I want to post information! ';
}else{
echo 'Brother, what time is it now~~~ People haven't woken up yet! ! ! ';
}

I need to remind you that the current time obtained is the server time, so please pay attention to the time zone setting of the server time and whether it is on time, or you can create a scheduled task to check it every day and everything will be OK

php time size comparison method?

If you want to indicate that checking in between $time1 and $time3 counts as attendance, you can write like this
if($time2>$time1 && $time2<$time3){
echo "Attendance";
}
else{
echo "absence";
}

Of course it can also be written as

if(strtotime($time2)>strtotime($time1) && strtotime($time2)echo "attendance";
}
else{
echo "absence";
}

php time size comparison method?

The time can be compared like that, but you wrote the condition wrong, it should be &&, right?
if($time2>$time1 && $time2<$time3){
......

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