Comparing time in PHP - php

Question

I am comparing a deadline time from my database which is on a 24-hour format (like 3:00 = 15:00) to the time now.
For example, if a student wasn't able to submit on the due time, an upload link will be greyed out.
I'm okay with the date comparison, my problem is the time.
Here's my current code:
$date = date("Y-m-d");
$time = strtotime(date('G:i:s'));
$deadtime = strtotime($r['upload_deadtime']);
/*------$deadtime = 15:00:00 ---------*/
if(date($r['upload_deadline']) >= $date && $deadtime > $time){
echo '<td>upload</td>';
}
else{
echo '<td><a title="your too late! haha!" style="color:grey">upload</a></td>';
}
Update: let's just forget about the date comparison, what I'm trying to say is how can I compare my deadline time (which is on a 24-hour format (like 3:00:00 = 15:00:00)) to the time now.
Here's my current code:
$time = strtotime(date('G:i:s')); /*which returns 23:15:42 instead of 14:15:42 */
$deadtime = strtotime('15:00:00');
if($deadtime > $time){
echo '<td>upload</td>';
}
else{
echo '<td><a title="your too late! haha!" style="color:grey">upload</a></td>';
}

Answer 1

date_default_timezone_set('Asia/Manila');
$deadtime = strtotime("15:00:00");
if ($deadtime - time() > 0){
echo '<td>upload</td>';
}else{
echo '<td><a title="your too late! haha!" style="color:grey">upload</a></td>';
}
This may solve your time comparison issue!!
strtotime("15:00:00") will convert time into unix timestamp of today's 15:00:00 and time() have current unix timestamp.

Answer 2

You just have the comparison backwards on your time check.
You are checking if the deadline date is in the future (assuming the script always runs in the present) and then you are checking that the deadline time is less than the current time (IE before), on a date time epoch value.
With the check you are doing on the strtotime, you do not need to check the dates, as they are already included with the date and time by means of epoch.
Simply do:
if($deadtime > $time){
echo '<td>upload</td>';
} else {
echo '<td><a title="your too late! haha!" style="color:grey">upload</a></td>';
}
This will only show the upload link in the table if the deadline time is in the future.
EDIT:
In the case of your new code, you just need to make the deadtime a strtotime of the deadline date and time stamp from your dBase. Then the code will work.
You are still also comparing the wrong way around!
Example:
/* deadtime = strtotime of datetimestamp in format yyyy-mm-dd G:i:s */
/* $time = strtotime of now. */
if($deadtime > $time){
echo '<td>upload</td>';
} else {
echo '<td><a title="your too late! haha!" style="color:grey">upload</a></td>';
}

Answer 3

Use time PHP's DateTime::Diff
// Current Date and Time
$date_time_now = new DateTime();
// Date Time values from DB (Assuming it's coming from database)
$date_time_deadline = new DateTime('2014-09-08 15:00:00');
// Calculate difference
$difference = $date_time_now->diff($date_time_deadline);
// Output difference in human-readable format
echo "Difference: " . $difference->format('%d days, %h hours, %i minutes, %s seconds');
http://php.net/manual/en/datetime.diff.php

Answer 4

Here's my working code. I think you'll know that my point is.
date_default_timezone_set('Asia/Manila');
$time = date('H:i:s');
$deadline_time = date("h:i a",strtotime($r['upload_deadtime']));
list($hours,$mins,$secs) = explode(":",$time);
$hours = date("H") + 9;/*-gives me wrong hours so i got to modify it-*/
$time_array = array($hours,$mins,$secs);
$new_time =implode(":",$time_array);
$deadtime = strtotime($deadline_time);
$time_now = strtotime($new_time);
if($r['upload_deadline'] < $date && $deadtime < $time_now){/*-compares the date and time-*/
echo '<td>upload</td>';
}
else{
echo '<td><a title="your too late! haha!" style="color:grey">upload</a></td>';
}