time calculation problem in php

[deepaksinghkushwah]

i want to subtract 00:00:10 hours from 50:00:00 hours. the result should be 49:59:50 hours. please provide any code if available.

 

thanks

[Yesideez]

First convert to seconds

 

  /**
   * Convert H:i:s (HH:MM:SS) into seconds
   *
   * @param string $t
   * @return integer
   */
  function convertTimeToSeconds($t) {
  	$hrs=intval(substr($t,0,2))*3600;  //extract HH:mm:ss
  	$min=intval(substr($t,3,2))*60;    //extract hh:MM:ss
  	$sec=intval(substr($t,6,2));       //extract hh:mm:SS
  	return ($hrs+$min+$sec);
  }

 

You'll get the time returned as an integer - then convert to a human time.

$timeA=convertTimeToSeconds('00:00:10');
$timeB=convertTimeToSeconds('50:00:00');
$newTime=$timeB-$timeA;
$hours=floor($newTime/3600);
$minutes=floor($newTime/60);
$seconds=$newTime%60;
echo ($hours<10 ? '0' : '').$hours.':'.($minutes<10 ? '0' : '').$minutes.':'.($seconds<10 ? '0' : '').$seconds;

 

That will also format the result to two digits per part if either is lower than 10 which would need a leading 0 (ie. 5 would now be 05)

[deepaksinghkushwah]

function convertTimeToSeconds($t) {

$hrs=intval(substr($t,0,2))*3600; //extract HH:mm:ss

$min=intval(substr($t,3,2))*60; //extract hh:MM:ss

$sec=intval(substr($t,6,2));   //extract hh:mm:SS

return ($hrs+$min+$sec);

}

 

$t1=convertTimeToSeconds('30:00:00');

echo "<hr>".$t1."<hr>";

$t2=convertTimeToSeconds('12:00:00');

echo "<hr>".$t2."<hr>";

$newTime=$t1-$t2;

echo "<hr>".$newTime."<hr>";

$hours=floor($newTime/3600);

$minutes=floor($newTime/60);

$seconds=$newTime%60;

echo ($hours<10 ? '0' : '').$hours.':'.($minutes<10 ? '0' : '').$minutes.':'.($seconds<10 ? '0' : '').$seconds;

 

i m using above code as described in previous thread, but it gives wrong output. it also show 18 minute difference.

[deepaksinghkushwah]

solved

 

just change $minutes=floor($newTime/60) to $minutes=floor($newTime/60)%60 and it give right answer.

 

thank you very much for your help.