I am wondering if there is an easy way to do this, i'm pulling a timestamp from mysql, i then want to check if the timestamp is less than 24 hours ago, if it is, i do nothing, else i will do an action, my code:
$dbStoredDate = $theDate['site_date'];
$theTimeMinus = strtotime('-1 day', $dbStoredDate);
if ($theTimeMinus <= $dbStoredDate) {
}
This is what i have come up with, i realize now it would have been better if i used time() instead of timestamp() in mysql, lesson learned, the first value is coming from mysql, the second is just deducting 1 day, does the logic look ok do you think? thanks for any input guys.
You can do this easily (assuming you're using unix timestamp, if not you can convert it):
$continue = ((time() >= ($theDate['site_date']+86400));
if ($continue)
echo "older than/equal to 24 hours";
else
echo "not older than 24 hours";
Related
In the application that I'm working on, the user must choose a date/time which is at least 5 minutes into the future. For this, I'm trying to implement a check. Below is the code which checks the time difference between the current time and chosen time.
$cur_date = new DateTime();
$cur_date = $cur_date->modify("+1 hours"); //fix the time since its an hour behind
$cur_date = $cur_date->format('m/d/Y g:i A');
$to_time = strtotime($chosen_date);
$from_time = strtotime($cur_date);
echo round(abs($from_time - $to_time) / 60,2). " minute"; //check the time difference
This tells me the time difference from the chosen time and the current time in minutes. So let's say the current time is 09/22/2015 5:53 PM and the chosen time is 09/22/2015 5:41 PM - it will tell me the difference which is 12 minutes.
What I want to know is how I can tell if those 12 minutes are into the future or in the past. I want my application to only proceed if the chosen time is at least 5 minutes into the future.
You're doing too much work. Just use DateTime() to do the date math for you:
// Wrong way to do this. Work with timezones instead
$cur_date = (new DateTime()->modify("+1 hours"));
// Assuming acceptable format for $chosen_date
$to_time = new DateTime($chosen_date);
$diff = $cur_date->diff($to_time);
if ($diff->format('%R') === '-') {
// in the past
}
echo $diff->format('%i') . ' minutes';
Demo
$enteredDate = new DateTime($chosen_date)->getTimestamp();
$now = new DateTime()->getTimestamp();
if(($enteredDate-$now)/60 >=5)echo 'ok';
Basically, the code takes the two dates converted in seconds since 1/1/1970. We calculate the difference between the two dates and divide the result by 60 as we want minutes. If there is a difference of at least 5 minutes, we're ok. If the number is negative, then we are in the past.
If anyone is looking to do something similar, I found the Carbon library which is included by default with the framework I am using (Laravel 5), it was much easier to do this calculation.
$chosen_date = new Carbon($chosen_date, 'Europe/London');
$whitelist_date = Carbon::now('Europe/London');
$whitelist_date->addMinutes(10);
echo "Chosen date must be after this date: ".$whitelist_date ."</br>";
echo "Chosen Date: ".$chosen_date ."</br>";
if ($chosen_date->gt($whitelist_date)) {
echo "proceed";
} else {
echo "dont proceed";
}
One thing that has always confused me is Time in coding. I am very confused on how to go about doing this! Simply, I have a MySql Timestamp, and I want to subtract that from 24 hours.
Basically, I am trying to code something that only lets you complete an action once every 24 hours, and then if they try to complete it more then once it will tell them how long they have to wait to do it again.
This is the code I currently have:
$dailylogincheck = 2015-08-16 13:30:32 //MySQL Timestamp
date_default_timezone_set("America/New_York");
$lastloginbonus = new DateTime($dailylogincheck);
$currenttime = $lastloginbonus->diff(new DateTime(date("Y-m-d H:i:s")));
I don't have to use this code (if there is a better way to do this). So I would just like to subtract the current Timestamp from 24 hours, but I have no clue how to do this in PHP :( Please Help!
P.S. I would simply like to display a sentence like the following: You have already done this within the past 24 hours. Please come back in X hours X minutes and try again.
hope this works :-)
<?php
$dailylogincheck = '2015-08-16 13:30:32';
$end = new DateTime($dailylogincheck);
$end->add(new DateInterval('P1D'));//add 1 day to find end date
$now = new DateTime('now');
$interval = $end->diff($now);
if($end->diff($now)->days >= 1){
echo 'go for it';
}else{
echo $interval->format('%H hours, %i minutes until you can XXX');
}
As Dagon said, doing it in mysql is the best approach... but to address your php question, DateTime will accept a number of simple modifiers:
<?php
$lastBonus = new DateTime("-1 day"); // Last bonus was exactly 24 hours ago
$canNotGetNewBonus = new DateTime("-1 hour"); // Attempting another bonus 23 hours later
$canGetNewBonus = new DateTime("+1 hour"); // Attempting another bonus 25 hours later
var_dump($lastBonus->diff($canNotGetNewBonus)->days >= 1);
var_dump($lastBonus->diff($canGetNewBonus)->days >= 1);
I've been trying at this for a bit and can't get the damn code to work.. This is my first post, I've gone through a few, tried a million different ways.. I just want to get the difference in hours, then I'm set, I'll get the rest figured out..
Right now, it's giving me unusual answers (say there's a 2 hour difference, it'll give me 14 as an answer) Pardon my coding, I haven't done this in years and have no real formal training. I'll be as thorough as possible in my comments, and thanks a LOT. Any links appreciated. I have tried a LOT. Using PHP 5.3.something, and am pulling off a Wordpress 3.7.1 database.
Thanks in advance for the help for a beginner. I want to display "Updated x hours ago". Once I have the darned thing displaying the correct result, I'll figure the rest out.
//This is the current date, putting it into strtotime so everything is in the same format. It displays accurately.
$currentDate = date("Y-m-d");
$currentTime = date("H:i:s");
$currentDateHour = date("H", strtotime($currentDate . $currentTime));
// This is the date I'm pulling from the database, it only displays
// when in strtotime for some reason. It displays accurately to what is in the mySQL DB
$upDate = date("Y-m-d H", strtotime($row2[post_date]));
// Some variables to make life easier for later if statements if I ever get that far. Displays accurately.
$upDatehour = date("H", strtotime($row2[post_date]));
// trying simple subtraction
$hour = $currentDateHour - upDatehour;
// this is where the result is incorrect, what is wrong here? Any method I've tried gives me the same result, with or without strotime.. it's gotta be something simple, always is!
print strtotime($hour);
You can drastically simplify your code. I'd recommend refactoring it to use DateTime and specifically DateTime::diff().
$now = new DateTime();
$post = new DateTime($row2['post_date']);
$interval = $now->diff($post);
echo "Updated " . $interval->h . " hours ago";
Working example: http://3v4l.org/23AL6
Note that this will only show up to 24 hours difference. If you want to show all hours even for a difference of more than 24 hours, you'll need to figure in the days. Something like this:
$hours = $interval->h + ($interval->format("%a") * 24);
echo "Updated $hours hours ago";
Working example: http://3v4l.org/ilItU
If you are just trying to get the number of hours between two arbitrary times, the easiest way would be to get the difference in seconds of the two times, and then divide by 3600 to determine the number of hours between the two dates.
Here is a basic example:
<?php
$row2['post_date'] = '2013-12-02 07:45:38'; // date from database
$now = time(); // get current timestamp in seconds
$upDate = strtotime($row2['post_date']); // convert date string to timestamp
$diff = $now - $upDate; // subtract difference between the two times
$hours = floor($diff / 3600); // get the number of hours passed between the 2 times
echo $hours; // display result
Also, Wordpress has a built in function that may end up doing what your ultimate goal is, see wordpress function human_time_diff().
Example:
<?php echo human_time_diff( get_the_time('U'), current_time('timestamp') ) . ' ago';
Result:
2 days ago.
Example how to get difference between dates in hours:
$diff = date_diff(date_create(), date_create($row2['post_date']));
$hours = $diff->days * 24 + $diff->h;
If you wish to format output number with leading zeros, you can use sprintf() or str_pad() function. Example of sprintf() use for HH:mm format:
echo sprintf('%02d:%02d', $hours, $diff->i);
demo
I have a table which shows the time since a job was raised.
// These are unix epoch times...
$raised = 1360947684;
$now = 1361192598;
$difference = 244914;
$difference needs to exclude any time outside of business hours (ex, 9-5 and weekends).
How could I tackle this?
The thing you have to do are 3 in numbers.
You take your start date and calculate the rest time on this day (if it is a business day)
You take your end date and calulate the time on this day and
you take the days in between and multiply them with your business hours (just those, that are business days)
And with that you are done.
Find a little class attached, which does those things. Be aware that there is no error handling, time zone settings, daylight saving time, ...
input:
start date
end date
output:
difference time in seconds
adjustable constants:
Business hours
Days that are not business days
Very bad idea, but I had no choice because I'm on php 5.2
<?php
date_default_timezone_set('Asia/Seoul');
$start = 1611564957;
$end = 1611670000;
$res = 0;
for($i = $start; $i<$end; $i++){
$h = date("H", $i);
if($h >= 9 && $h < 18){
//echo date("Y-m-d H:i:s", $i) . "<br>";
$res = $res + 1;
}
}
echo $res;
Use DateTime.
Using UNIX time for this is slightly absurd, and you would have to literally remake DateTime.
Look up relative formats where you can specify the hour on the day, e.g.
$date = new DateTime($raised);
$business_start = new DateTime("09:00"); // 9am today
$business_end = new DateTime("17:00"); // 5pm today
The rest is for you to work out.
Oh, and instead of start/end, you could probably use DateInterval with a value of P8H ("period 8 hours")
The problem with using timestamps directly is that you are assigning a context to a counter of seconds. You have to work backwards from the times you want to exclude and work out their timestamps beforehand. You might want to try redesigning your storage of when a job is raised. Maybe set an expiry time for it instead?
I'm trying to do a function that will check the php date against what is in the database. If the current date (YYYY-MM-DD HH:MM:SS) is 24 hours after the stored database date, then it will continue, otherwise it won't do anything.. If that makes sense?
Here's how I'm trying to get it to work, but not 100% sure how:
$now = date("Y-m-d H:i:s");
foreach($results as $item) {
if ( /*item date is 24 hours or more earlier than $now*/ ) { /* this is what I'm not sure how to do */
//do something
} else {
//do nothing
};
};
If someone could help me get this working, I'd greatly appreciate it. I just don't know how to compare $item->date with $now and see if $item->date is 24 hours or more behind $now..
You can use strtotime instead of date math. Personally I think it reads much better.
if (strtotime($item->date) <= strtotime('-1 day')) {
// date is more than or equal to 24 hours old
}
foreach($results as $item) {
if (time() >= strtotime($item['date']) + 86400) {
// current time is 86400 (seconds in one day) or more greater than stored time
} else {
//do nothing
};
};
Note that if the stored date isn't in the same timezone as the server you'll need to mess with timezones - see here for starters.
Note that I store dates and times in MySQL as Unix timestamps to avoid some of these problems. I know it's not good database practice, but then PHP stores times as Unix timestamps anyway.