I have a start and end time in milliseconds.
I have to get all the TV series that are ON AIR when the user visits the page.
So I am trying to do this:
if($prog["inizio"] < time() && $prog["fine"] > time()){
array_push($programmazioneFinal[$date."-".$prog["id_canale"]], $prog);
}
The logic is to get only those series whose starting time is lower than now (the serie is already started) and the end time is bigger than now.
For some reasons it is also returning those series that start much later in the day, not just the ones ON AIR now.
What's wrong?
I have added a screenshot of my DB just to make this clearer.
Thank you!
In PHP: You can use strtotime. This will give you timestamp value which you can use for comparison
strtotime("now")
Edit in your code
if($prog["inizio"] < strtotime("now") && $prog["fine"] > strtotime("now")){
array_push($programmazioneFinal[$date."-".$prog["id_canale"]], $prog);
}
Make your query look like
Select * from ... WHERE UNIX_TIME($your_date_parameter) BETWEEN inizio AND fine
Related
I have a somewhat working countdown script already with a defined time (using new DateTime) but haven't figured out how to automatically swap times daily.
I'm looking to do a countdown every day at 5:10, 5:50, and 6:15 PM UTC. If 5:10:00 passes, then swap the countdown for 5:50:00. If it's 6:16, then it'll show for 5:10 tomorrow
How would I be doing comparisons for this? It says something about a non-object when I try to just use the datetime'd variable in a > <
Rather than comparing the objects themselves, you can compare their timestamps. For example:
if($dateTime1->getTimestamp() > $dateTime2->getTimestamp()) {
// ...
}
I have a list of timestamps that represent a list of backed up files. But to reduce the amount of space needed I only want to keep the files that are from around mid day- I have started writing a function check but got stuck on how could i check if the timestamp is between 12 and 1 for that day? I have a list of timestamps for many days.
function check_date($timestamp='')
{
if (($timestamp < strtotime("-1 week")) && (time is between 12 and 1 )){
}
else
remove
}
I wrote an answer to this previously, I will try find a link in a minute when im free but essentially get the timestamp for 12 and the timestamp for 1 then
if(timestamp12 < curTimestamp && curTimestamp < timeStamp1)
Then you know that the curTimeStamp is between 12 and 1.
Previous answer https://stackoverflow.com/a/11578345/1475461
The other question was for a javascript implentation but timestamp comparison works the same whether you are using PHP, javascript etc. since they are miliseconds/seconds since a set point in time (1st January 1970), so it is just a comparison of integers.
Okay, let me think...ah, here it is. Good old 'localtime' function.
http://www.php.net/manual/de/function.localtime.php
Run your timestamp through this function, then you can check the result.
$TimeInfo = localtime(timestamp, true);
if (($timestamp < strtotime("-1 week")) && $TimeInfo["tm_hour"] == 12) {
}
else remove
With this code, all files, which have arrived at 12:00, up to 12:59 (1 is excluded in this example) are preserved, the others get removed.
all - fairly simple query question that's been hounding me: How do I query for entries with a date and time only greater than now, or when the query is run (page requested)?
I've seen some examples but they aren't good enough for me to modify. Here's my code:
$todaysDate = date("Y-m-d h:i:s");
$params = array('select'=>'*', 'limit'=>3, 'orderby'=>'t.event_StartDate ASC', 't.event_StartDate < "$todaysDate"' );
An example of the variable "t.event_StartDate" outputs "2010-12-10 22:18:42" so I assume that may be how it's saved in the database.
I suspect I'm not building the date correctly or I need to be using a time function I'm not familiar with in MySQL. Help? This is for outputting a series of events with date and time.
I think you reverse the use <, it should be >
try
SELECT ... WHERE t.event_StartDate>NOW();
/* you don't even need to set $todaysDate */
t.event_StartDate > NOW() don't will returns nothing? a date higher of now lol. I'm confused.
I need to compare two dates to show an edit link if it is within 5 mins after the post was made, in PHP. If more than 5 minutes have passed, don't show anything.
$answer_post_date = get_the_time("Y-m-d");
$current_date = date("Y-m-d");
$formated_current_date = strtotime($answer_post_date);
$formated_answer_post_date = strtotime($current_date);
At this point I have two values:
1274414400 ($formated_current_date)
1276056000 ($formated_answer_post_date)
I am not sure what to do next to check if the current date/time is > 5 mins from the answer post date.
Any suggestions would be great.
All I really need the answer to be is a Boolean (yes/no) and if yes, display the minuets left to show the link to edit.
You're only handling dates, how are you supposed to know if the difference is 5 minutes?
Anyway, I'd say the majority of the PHP code that uses the default PHP functions is at least somewhat broken. The problem is you, despite a unix timestamp storing the correct point in time something happens, it does not store timezone information. See here.
So, forget using only date and strtotime. Use the datetime extension.
Store in the database the Unix timestamp and the timezone (by timezone I mean e.g. Europe/Lisbon). Then:
$tz = new DateTimeZone($timezone);
$answer_post_date = new DateTime("$timestamp");
$answer_post_date->setTimeZone($tz);
$current_date = new DateTime("now", $tz);
$diff = $current_date->diff($answer_post_date);
if ($diff->format("a") > 0 ||
$diff->format("h") > 0 ||
$diff->format("m") >= 5) {
//more than 5 minutes have passed
}
Of course, for comparing dates, you can always compare the timestamps.
My understanding of what you need to do:
$delta = ($formated_current_date - $formated_answer_post_date) / 60; // in minutes
if ($delta < 5) {
// show $delta
}
EDIT: Like others pointed out, this alone will not fix all of the issues at hand. As I see it, the smallest change to your current code would be to use a date format with higher granularity - such as "Y-m-d H:i:s". This being enough, like others pointed out, is contingent on the post's date being in the same timezone as your system.
I don't see the need to do a round-trip to a string format and back, regardless of how efficient or reliable it is.
date() will default to calling time() which you can call directly and get the current time in seconds as a Unix epoch timestamp (which is what you're trying to end up with in $formated_answer_post_date). You need to look in the WordPress docs to find the equivalent based on the post's value.
Then you can do a simple comparison of seconds. 5 minutes is 300 seconds.
You will still need to check that the code can assume the timezones of both values will be the same.
Hi guys I was wondering if anyone could help me with the following:
I have two dates entered in two different fields > startDate and endDate.
As they are entered I would like to show a warning if:
the second one is a date before the first one. So it is wrong.
and that between the first one and the second one there a minimum gap of at least 3 days during certain period of the year and 7 days during other periods of the year.
I was thinking to write a PHP function but how do I call it as soon as the second date is entered?
Many many thank for you help
Francesco
Convert your dates to Julian day with gregoriantojd.
/**
* Get the Julian day of a date. The Julian day is the number of days since
* January 1, 4713 BC.
*/
function datetojd($date)
{
return gregoriantojd(idate('m', $date),
idate('d', $date),
idate('Y', $date));
}
// you can use strtotime to parse a lot of date formats, assuming they are text
$startDate = strtotime('22nd Nov 2009');
$finishDate = strtotime('26nd Nov 2009');
$diff = datetojd($finishDate) - datetojd($startDate);
if ($diff < 0) {
// oops, $finishDate is before $startDate
}
else {
// check $diff is at least 3 or 7 depending on the dates
}
Do the check on the client side with Javascript.
Then perform the same checks server side which can present a message after the form has been submitted (for those few users running with Javascript disabled?).
I'm not sure if you can call it as soon as the second date is entered, unless you reload the page or have the function on another page which could get a tad complicated
The way i would check the dates is to use php's mktime function, which will give you the unix time. Then if the second one is less that the first, the second date is before and if the second one is less that the first + 3 * 24 *60 * 60 (seconds in 3 days) then it isn't 3 days apart
1° case:
SELECT [whatever you need from the table] WHERE endDate < startDate
2°case:
SELECT [whatever you need from the table] WHERE (endDate - startDate) >= IF([select that define in wich period of the year the data are],3, 7)
This ill do the trick, but probably your problem cant be solved sql-side.
Please, describe better what you need to do.
EDIT:
Ok, then as someone else suggested, first check htem by js (for convenience, not for safely: never rely only on js validation!)
Use strtotime for the comparison/operation.
EDIT2 (last;) :
Go with Alex's Answer