Here is a query that i am using to compare time in codeigniter
$present_time = date("h:i a");
$this->db->where('status!=', 'closed ');
$this->db->where('one_hour_break!=', ' ');
$this->db->where("(one_hour_break ='$present_time' or one_hour_break < '$present_time')");
$query = $this->db->get('student');
$final_time = $query->result();
if($final_time)
{
echo "true";
}
else
{
echo "false";
}
It is comparing the time properly if it is between 1 and 12 however it is not comparing time properly between the given time is between 12pm to 1pm and 12am to 1pm
e.g :
So if present time: 12:30 pm and one_hour_break: 1:30 pm, then one hour break should be greater than present time, and the result should say false, however it is saying true. Same goes with the time between 12pm to 1pm
Can anyone please tell how to manage this issue
There are a few ways to fix this, the best way is to go back and store the times in the database with "Y-m-d H:i" or something like it.
That way you can get a fixed timestamp of when, and not only time of day which is useless most of the times when you develop.
Then you use strtotime() http://php.net/manual/en/function.strtotime.php to convert the date in string format to a numeric value that can easily be compared.
Related
I'm trying to do a comparison between date & times in Carbon PHP 2. For context, my server is in Europe/London timezone, and a user has the functionality to set their own timezone, thus my $timezone variable. My Laravel 8 project default timezone config is Europe/London too.
When a user provides a start time, I store the date & time as a date field in my DB, but obviously the day, month and year would always be wrong at the point my code runs, thus why we override these with the current day.
Still though, you can see from my output that their time is greater than the start time, but my if statement never runs, why?
$timezone = 'Asia/Tokyo';
$startTime = Carbon::parse('2022-08-01 05:00:00');
$theirTime = Carbon::parse(Carbon::now())->setTimezone($timezone);
$ourTime = Carbon::parse($theirTime)->setTimezone('Europe/London');
$startTime = $startTime->day($theirTime->day);
$startTime = $startTime->month($theirTime->month);
$startTime = $startTime->year($theirTime->year);
echo "their time: $theirTime ----- start: $startTime";
if ($theirTime >= $startTime) {
echo 'run now';
} else {
echo 'do not run';
}
output is:
their time: 2022-08-05 05:16:27 ----- start: 2022-08-05 05:00:00do not run
05:16:27 is greater than 05:00:00 so should output run now, what am I missing?
You can use carbon gte() method
if ($theirTime->gte($startTime)) {
echo 'run now';
} else {
echo 'do not run';
}
as for why it says "do not run", it is because "2022-08-05 05:16:27 GMT+1" comes before "2022-08-05 05:00:00 GMT" and carbon carbon converts itself to integer (unix timestamp) in the comparisation.
I cant give you a complete example because you did not define what $timezone is in your question.
If you want to compare the times as strings directly (and have total faith in your control of timezones you can
if ($theirTime->format('H:i:s') >= $startTime->format('H:i:s')) {
echo 'run now';
} else {
echo 'do not run';
}
Ideally you would run the server in UTC. When the user enters Wake me up at 6am you need to know 6am in what timezone, so need to store the timezone with the 6am or with that user's profile - whatever makes more sense in your application. But it would be a problem to search the database for each user's wakeup time in their own timezone so for activities like this, convert the time to UTC before storing it.
Then if the user wanted waking at 6am, this might be 18:00 utc but that would not matter. When the 'wakeup' time is the same as the server's current time, wake the user up and tell them "this is your $wakeup)->tz($user->timezone) wakeup".
Regarding your specific situation, you want to know if now() in Tokyo is greater than the time on the DB record, however you can only look at the H:m in the stored value;
$theirTime = Carbon\Carbon::parse('2022-03-01 05:00'); // get this from DB
// our reference point
$current = now()->tz('Asia/Tokyo');
$target = now()->tz('Asia/Tokyo');
$target->hour = $theirTime->hour;
$target->minute = $theirTime->minute;
$target->second = 0;
if($current->gte($target)) {
echo 'overdue';
} else {
echo 'Not due';
}
lets assume that NOW is 2021-09-15 (DBDatetime format). I would like to add to that existing date -1 day and set time to be at 10:00 AM, so:
Initial date would be: 2021-09-15
Expired date would be: 2021-09-16 10:00 AM
The reason for that is I would like to get videos (on my newbie site) even after their airing time exired. So lets say expiring time is set to initial date and i want to have that till 21-09-16 10:00 AM is up.
Is that possible?
Yes, it's very easy with DateTime::modify.
$basisDate = '2021-09-15'; //or 'today' for the current day
$date = date_create($basisDate)->modify('+1 Day 10:00');
//test output
echo $date->format("Y-m-d H:i"); //2021-09-16 10:00
Another variant, not so tricky and easier to understand:
$date = date_create($basisDate)
->modify('+1 Day')
->setTime(10,0)
;
i want to get the timestamp of tomorrow at 12PM, i can do this using the line of code below
strtotime('tomorrow noon');
But the problem am having is that, when the current time is 00:00 at midnight, am getting the next day timestamp, i want it such when the time is 00:00 at midnight, it should still give the timestamp of noon of the new day not the next day.
You can do a simple ternary:
strtotime((date('H:i') == '00:00' ? '' : 'tomorrow ').'noon');
Or with a simple if case:
if (date('H:i') == '00:00') {
$noon = strtotime('noon');
} else {
$noon = strtotime('tomorrow noon');
}
I'm imagining you might like to display the current day at noon if it is not yet noon, otherwise show the time tomorrow at noon. If this is the case, the following might be helpful:
$noon = strtotime('now') < strtotime('noon')
? strtotime('noon')
: strtotime('tomorrow noon')
I'm trying to print a specific mesasge to the browser depending if my timestamp is AM or PM. In this instance if it's before 12 noon then then I want to echo out Good morning.
The time stamp held in $person['StartDateTime'] is 2019-10-09T14:00:00
The message always prints out the good morning message and I've tried the other posts on here but can't seem to get it to work. I've tried 'noon', 12, 12 PM, etc..
if ($person['StartDateTime'] < strtotime("noon"))
{
echo 'Meeting Time:' . $person['StartDateTime'] . '<br>';
echo "Good morning" . '<br>';
}
Edited:
If I try as suggested below I get nothing back.
if (strtotime($person['StartDateTime']) < strtotime("noon"))
If I try using after >
if (strtotime($person['StartDateTime']) > strtotime("noon"))
I get the message but also on my morning timestamp - 2019-10-09T10:00:00 which I shouldn't.
I'm wondering do I need to specify noon for the day of the timestamp?
Ok after trying a few things the solution in this case was simple.
Format the date using only "A", this will return AP or PM depending on the time.
$starttime = date("A",strtotime(date($person['StartDateTime'])));
if ($starttime == "AM"){
echo "Good Morning" . '<br>';
}
I suggest using Datetime with proper format argument a which gives either am or pm depending on the time
if ((new Datetime($person['StartDateTime']))->format('a') == 'am') {
// am
} else {
// pm
}
strtotime return timestamp. You compare int value with string. Read about strtotime function
What PHP code can I use to stop showing text at a certain time?
For example:
"Come to this event at 3PM on Monday!"
I don't want that to show after 3:01PM on the site.
First, you have to know the date and time of Monday 3pm, in a format that can be understood by PHP functions : 2010-04-26 15:00:00
Then, you have to convert that to an UNIX timestamp, which can be done with the strtotime() function :
$tsMonday = strtotime(2010-04-26 15:00:00);
After that, the time() function gives you the current timestamp ; which means you can use it to determine whether monday 3pm has passed or not :
if (time() < $tsMonday) {
echo "not yet monday 3pm";
}
Note : instead of converting the date to a timestamp with strtotime each time the page is called, you could directly put the timestamp value in your code -- if this is only for one event, it'll work great (but, for several events, it might become harder to maintain).
<?PHP
$when = strtotime('April 26, 2010 15:00:00');
if ($when > time()){
echo "Be there at 3pm on monday or be square";
}
$endTime = 1272319200; // The timestamp you want the message to stop displaying
if ( time() < $endTime){
echo "Come to this event at 3PM on Monday!";
}
else{
echo 'It\'s too late to show this message.';
}