how to calculate time left using string minus another string? - php

i have lets say a $value = 5; and the valnue means 5 minutes, and i have a file saved on the server and getting modified a lot called check.txt i want a code to do a calculation of if timenow - timemodification of file <= 0 in H:i:s from the main $value of 5 minutes then continue, else echo please wait minutes left from the time now - filetimemodification of the main value of 5 minutes = $timeleft in m:s format.
i'm testing on the current code but i keep getting a value of -1376352747
my code which is know is bad :) is
$filename = 'check.txt';
$time = date("H:i:s");
$time = str_replace("00", "24", $time);
$filemodtime = filemtime($filename);
$timeleft = $time - $filemodtime;
$h = explode(':', $time);
$h = $h[0];
$h = str_replace("00", "24", $h);
$m = explode(':', $time);
$m = $m[1];
$s = explode(':', $time);
$s = $s[2];
$hms = ("$h:$m:$s");
if (count($filemodtime - $time) <= 0) {
echo "you can continue";
}
else {
echo " please wait $timeleft";
}
thanks in advance

The filemtime() function returns a UNIX-timestamp in seconds, and the time() function returns the current time as a UNIX-timestamp. So by using that difference, you get the file's age in seconds.
$age = time() - filemtime($filename);
// if older then 5 minutes (5 * 60 secounds)
if($age > $value*60)
{
// good
}
else
{
$time_left = $value * 60 - $age;
$time_left_secounds = $time_left % 60;
$time_left_minutes = ($time_left - $time_left_secounds) / 60;
$formated_time_left = sprintf("%02d:%02d", $time_left_minutes, $time_left_secounds);
echo "Please wait {$formated_time_left}";
}

I would recommend to work with time() rather than date().
that way, you can substract the file time from the current time() function, and see if it is bigger than 5 minutes * 60 seconds.
Good luck!

Related

Calculate Total time from array in php if total time greater than 24 hours

I want to get the sum of the time in array. There are a lot of questions asked before related this question. Only problem this solution work the only sum is less than 24 hours. After 24 hours it will start at 00:00:00. How do I get more than 24 hours as total?
<?php
$total = [
'00:02:55',
'00:07:56',
'01:03:32',
'15:13:34',
'02:13:44',
'03:08:53',
'13:13:54'
];
$sum = strtotime('00:00:00');
$sum2=0;
foreach ($total as $v){
$sum1=strtotime($v)-$sum;
$sum2 = $sum2+$sum1;
}
$sum3=$sum+$sum2;
echo date("H:i:s",$sum3);
?>
RESULT
11:04:28
Expected result
35:04:28
DEMO LINK
Try the following code
<?php
function explode_time($time) { //explode time and convert into seconds
$time = explode(':', $time);
$time = $time[0] * 3600 + $time[1] * 60;
return $time;
}
function second_to_hhmm($time) { //convert seconds to hh:mm
$hour = floor($time / 3600);
$minute = strval(floor(($time % 3600) / 60));
if ($minute == 0) {
$minute = "00";
} else {
$minute = $minute;
}
$time = $hour . ":" . $minute;
return $time;
}
$time = 0;
$time_arr = [
'00:02:55',
'00:07:56',
'01:03:32',
'15:13:34',
'02:13:44',
'03:08:53',
'13:13:54'
];
foreach ($time_arr as $time_val) {
$time +=explode_time($time_val); // this fucntion will convert all hh:mm to seconds
}
echo second_to_hhmm($time);
?>
With the external DateTime Extension dt you can add all times to a date.
With DateTime::diff you get the result:
$dt = dt::create("2000-1-1"); //fix Date
$dtsum = clone $dt;
foreach($total as $time){
$dtsum->addTime($time);
}
$diff = $dt->diff($dtsum);
printf('%d:%02d:%02d',$diff->days * 24 + $diff->h,$diff->i,$diff->s);
Output:
35:04:28
Update
Without a DateTime-Extension:
$dt = date_create("2000-1-1"); //fix Date
$dtsum = clone $dt;
foreach($total as $time){
$timeArr = explode(":",$time);
$secondsAdd = $timeArr[0] * 3600 + $timeArr[1] * 60 +$timeArr[2];
$dtsum->modify($secondsAdd." Seconds");
}
$diff = $dt->diff($dtsum);
printf('%d:%02d:%02d',$diff->days * 24 + $diff->h,$diff->i,$diff->s);
Look at what you are doing: using time to make computations ignoring date part.
Maybe considering things in another way : 1 hour = 60 seconds * 60 minutes. So convert all you iterations as seconds, do the sum at the end and write time you need yourself.
Or, or you will use some greater things from php documentation
<?php
$january = new DateTime('2010-01-01');
$february = new DateTime('2010-02-01');
$interval = $february->diff($january);
// %a will output the total number of days.
echo $interval->format('%a total days')."\n";
// While %d will only output the number of days not already covered by the
// month.
echo $interval->format('%m month, %d days');
Adapt to your needs, and I am sure it will work well.
Personally I would completely avoid touching any date functions because you're not working with dates. You could do something like:
// Input data
$data = [
'00:02:55',
'00:07:56',
'01:03:32',
'15:13:34',
'02:13:44',
'03:08:53',
'13:13:54'
];
// Total to hold the amount of seconds
$total = 0;
// Loop the data items
foreach($data as $item):
$temp = explode(":", $item); // Explode by the seperator :
$total+= (int) $temp[0] * 3600; // Convert the hours to seconds and add to our total
$total+= (int) $temp[1] * 60; // Convert the minutes to seconds and add to our total
$total+= (int) $temp[2]; // Add the seconds to our total
endforeach;
// Format the seconds back into HH:MM:SS
$formatted = sprintf('%02d:%02d:%02d', ($total / 3600),($total / 60 % 60), $total % 60);
echo $formatted; // Outputs 35:04:28
So we loop the items in the input array and explode the string by the : to get an array containing hours, minutes and seconds in indexes 0, 1, and 2.
We then convert each of those values to seconds and add to our total. Once we're done, we format back into HH:MM:SS format

Difference between durations

I am creating a timesheet whereby it shows expected and actual hours.
The durations are saved like the below
23:15 - 23 hours and 15 mins
25:45 - 25 hours and 45 mins
I need to work out the difference in hours and mins between the two (extra hours worked)
I have tried the below
$acutal=='23:15';
$expected=='25:45';
$start_time = new DateTime("1970-01-01 $acutal:00");
$time = $start_date->diff(new DateTime("1970-01-01 $expected:00"));
This does work, however when the hours are over 24:00 it throws an error (obviously because it's reading it as time)
Uncaught exception 'Exception' with message 'DateTime::__construct():
Failed to parse time string (1970-01-01 25:45:00)
Is there another way to do this?
You could check if the number of hours are greater than 24, and if so, add a day, and remove 24 hours.
$actual='23:15';
$expected='25:45';
$day = 1;
list($hrs, $min) = explode(':', $expected);
if ($hrs > 24) { $day += 1; $hrs -= 24; }
$start_time = new DateTime("1970-01-01 $actual:00");
$time = $start_time->diff(new DateTime("1970-01-$day $hrs:$min:00"));
echo $time->format('%hh %Im');
Output:
2h 30m
Please also note that == is used to compare, not to assign.
You can also change the if ($hrs > 24) by while(), if there is 48 hours or more.
edit
As pointed out by #CollinD, if the time exceed the number of days of the month, it will fail. Here is another solution:
$actual='23:15';
$expected='25:45';
list($hrs, $min) = explode(':', $actual);
$total1 = $min + $hrs * 60;
list($hrs, $min) = explode(':', $expected);
$diff = $min + $hrs * 60 - $total1;
$start_time = new DateTime();
$expected_time = new DateTime();
$expected_time->modify("+ $diff minutes");
$time = $start_time->diff($expected_time);
echo $time->format('%hh %Im');
You can do it manually by keeping track of the number of minutes worked - this will be exact and will also allow you to show negative differences.
<?php
// get the difference in H:mm between two H:mm
function diff_time($actual, $expected) {
$diff_mins = mins($actual) - mins($expected);
return format_mins($diff_mins);
}
// convert a HH:mm to number of minutes
function mins($t) {
$parts = explode(':', $t);
return $parts[0] * 60 + $parts[1];
}
// convert number of minutes into HH:mm
function format_mins($m) {
$mins = $m % 60;
$hours = ($m - $mins) / 60;
// format HH:mm
return $hours . ':' . sprintf('%02d', abs($mins));
}
var_dump(diff_time('23:15', '25:45'));
var_dump(diff_time('25:15', '23:45'));
This outputs:
string(5) "-2:30"
string(4) "1:30"
.. first, 2:30 less than expected, for the second 1:30 more than expected.
You can try using datetime functions but it seems a lot more straightforward to me to treat the times as string, use split or explode to get hours and minutes, convert to integers, get the difference in minutes and convert it back to hours and minutes (integer divide by 60 and remainder).
$t1=explode(':',$expected);
$t2=explode(':',$actual);
$d=60*($t1[0]-$t2[0])+t1[1]-t2[1];
$result=str_pad(floor($d/60),2,'0',STR_PAD_LEFT).':'.str_pad($d%60,2,'0',STR_PAD_LEFT);

how to check if time is more than 30minute?

I have saved a time. I would like to check whether the saved time is 30 minutes greater than the current time. You can see in the code what I have done so far but it doesn't work.
I would need some help fixing that code.
$current = "08:05";
$to_check = date('h:i');
if($to_check > $current + strtotime('30 minute')){
echo "greater";
}
else {
echo "not greater";
}
First, your $current isn't the current time, $to_check is, so your variable names are misleading.
That being said, store your "08:05" as a Unix timestamp then see if the difference between the two is greater than 30 * 60.
$seconds = 1800; // 30 mins
$time1 = strtotime($db_time) + $seconds;
if(time() >= $time1)
echo "Time's up!"
else
echo "time has not expired";
This should work for you:
<?php
$current = date('H:i');
$to_check = date('H:i', strtotime('+30 minutes'));
$to_check = date('H:i', strtotime($record['date'])); //If value is from DB
if($to_check > $current){
echo "greater";
}
else {
echo "not greater";
}
Save time using time function this would give you time in seconds from 1970 so for example current time is 1501137539 and after 30 minutes it would be (1501137539 + 30*60) so you would just need to check if difference b/w current time and stored time is greater that 30*60 then half an hour is over.
Try this snippet:
function x_seconds($to_check = 'YYYY-mm-dd H:i:s') {
$to_check = strtotime($to_check);
$current = time() + 1800; //We add 1800 seconds because it equals to 30 minutes
return ($current>=$to_check) ? true : false;
}
Or go pro, and have a custom "seconds since", just because you can?
function x_seconds($to_check = 'YYYY-mm-dd H:i:s', $seconds = 1800) {
$to_check = strtotime($to_check);
$current = time() + $seconds; //We add x seconds
return ($current>=$to_check) ? true : false;
}
Example usage:
$date = date('Y-m-d H:i:s', '2017-07-27 05:00');
if(x_seconds($date)):
print "Is within 30 minutes.";
else:
print "IS NOT within 30 minutes";
endif;
Try this to solve the issue
$current = strtotime('12:00:00');
$to_check = strtotime(date('H:i:s'));
$newtime = round(( $to_check - $current ) /60 );
if($newtime > 30){
echo "greater";
}else {
echo "not greater";
}

PHP sum two different minutes

i have two different break time
default break time
extra break time
here i want to sum of two times and display 12 hrs format
EX :
$default_time = "00:30";
$extra_time = "00:25";
my expected output : 00:55
but now display 01:00
this is my code
$default_time = $work_data->break_time;
$break_time = $work_data->extra_time;
$total_break = strtotime($default_time)+strtotime($break_time);
echo date("h:i",strtotime($total_break));
Here is the function you can calculate total time by passing the arguments to functions.
$hours, $min are supposed variable which is zero
$default_time = "00:30";
$break_time = "00:25";
function calculate_total_time() {
$i = 0;
foreach(func_get_args() as $time) {
sscanf($time, '%d:%d', $hour, $min);
$i += $hour * 60 + $min;
}
if( $h = floor($i / 60) ) {
$i %= 60;
}
return sprintf('%02d:%02d', $h, $i);
}
// use example
echo calculate_total_time($default_time, $break_time); # 00:55
There is one function call to strtotime function too much.
You should leave out the strtotime() call in the last line, as $total_break already is a UNIX timestamp:
$total_break = strtotime($default_time)+strtotime($break_time);
echo date("h:i",$total_break);
The problem is that you're trying to add too specific timestamps, but what you're trying to achieve is adding two durations. So you need to convert those timestamps into durations. For that you need a base, which in your case is 00:00.
$base = strtotime("00:00");
$default_time = $work_data->break_time;
$default_timestamp = strtotime($default_time);
$default_duration = $default_timestamp - $base; // Duration in seconds
$break_time = $work_data->extra_time;
$break_timestamp = strtotime($break_time);
$break_duration = $break_timestamp - $base; // Duration in seconds
$total_break = $default_duration + $break_duration; // 55 min in seconds
// If you want to calculate the timestamp 00:55, just add the base back to it
echo date("H:i", $base + $total_break);
Consider using standard DateTime and DateInterval classes. All you will need is to convert your second variable value to interval_spec format (see http://php.net/manual/en/dateinterval.construct.php for details):
$defaultTime = "00:30";
$breakTime = "PT00H25M"; // Or just 'PT25M'
$totalBreak = (new DateTime($defaultTime))->add($breakTime);
echo $totalBreak->format('H:i');
You could try the following code fragment:
$time1 = explode(":", $default_time);
$time2 = explode(":", $break_time);
$fulltime = ($time1[0] + $time2[0]) * 60 + $time1[1] + $time2[1];
echo (int)($fulltime / 60) . ":" . ($fulltime % 60);
<?php
$time = "00:30";
$time2 = "00:25";
$secs = strtotime($time2)-strtotime("00:00:00");
$result = date("H:i:s",strtotime($time)+$secs);
print_r($result);
?>
Use below code you will definitely get your answers.
$default_time = "00:30:00";
$extra_time = "00:25:00";
$secs = strtotime($extra_time)-strtotime("00:00:00");
$result = date("H:i:s A",strtotime($default_time)+$secs);
echo $result;die;
You can modify above code as per your need.
You could try the following:
$default_time = $work_data->break_time;
$date_start = new DateTime($default_time);
$break_time = $work_data->extra_time;
$interval = new DateInterval("PT" . str_replace(":", "H", $break_time) . "M");
$date_end = $date_start->add($interval);
echo $date_end->format("H:i");
Note that this doesn't account for times which span a 24 hour period

PHP: Time/HH:Minute:Seconds convert to Seconds

I have a code where it will subtract the Total Duration and the Total Time, and after that the result for the computation will be converted into seconds...
Assuming in my Total Duration is "02:00:00"
then for Total Time is "01:30:00"
For computation...
02:00:00 - 01:30:00 = 00:30:00
then for the result, "00:30:00" will be converted to seconds and the result is "1800"
How can I convert it?
Thanks for the help...
Use strtotime function. It returns the UNIX timestamp (number of seconds since January 1st 1970 00:00:00). If you'll pass the hour format HH:MM:SS to it, you can easily do the math
$to = strtotime('02:00:00');
$from = strtotime('01:30:00');
$seconds = $to - $from; // outputs 30
You assumed that the format is minutes:seconds:miliseconds and you wanted to receive 30 seconds in your case. Actually the output is 30 minutes. Miliseconds are separated with a dot.
Your hours should probably look like this:
$to = strtotime('00:02:00');
$from = strtotime('00:01:30');
How about splitting the Time-String into three substrings with the function (returns an array of substrings)
$substrings = new Array();
$substrings = explode(":", $timeString);
Now the array $substrings contains three substrings (hours, minutes, seconds).
you could compute the seconds just by multiplicating:
$hours = intval($substrings[0]);
$minutes = intval($substrings[1]);
$seconds = intval($substrings[2]);
$seconds = $hours * 3600 + $minutes * 60 + $seconds;
Can you try this,
$start = '01:30:00';
$end = '02:00:00';
$workingHours = (strtotime($end) - strtotime($start));
$res= date("i", $workingHours);
echo "DIFF: ". $res; //OP 30 Minutes
echo $resFull= date("H:i:s", $workingHours); //OP 00:30:00
If you use format HH:MM:SS then you can convert it to seconds by next code
$timestr = "00:30:00";
$temp = explode(":", $timestr);
if ($temp && is_array($temp) && count($temp) == 3) {
$time = intval($temp[0]) * 3600 + intval($temp[1]) * 60 + intval($temp[1]);
} else {
$time = null;
}
Alternative with PHP 5.3:
<?php
try {
$date1 = new DateTime('02:00:00');
$date2 = new DateTime('01:30:00');
$diff = $date1->diff($date2);
echo $diff->format('H:i:s');
} catch (Exception $e) {
echo $e->getMessage();
exit(1);
}

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