// Affichage d'une chaine de la forme YYYYMMJJ
sprintf("%02d/%02d/%04d", substr($date,6,2), substr($date,4,2), substr($date,0,4));
// Chaine YYYYMMJJ representant la date 
$date_courante = date("YmdHis", time());
// Chaine YYYYMMJJ representant la date d'hier 
$date=date("Ymd", mktime(0, 0, 0, date("m") , date("d") - 1, date("Y")));

//h:m:s entre 2 dates 
$time_submitted=mktime(substr($bug["date_submitted"],11,2),substr($bug["date_submitted"],14,2),substr($bug["date_submitted"],17,2),substr($bug["date_submitted"],5,2),substr($bug["date_submitted"],8,2),substr($bug["date_submitted"],0,4));
$time_resolved=mktime(substr($bug["date_resolved"],11,2),substr($bug["date_resolved"],14,2),substr($bug["date_resolved"],17,2),substr($bug["date_resolved"],5,2),substr($bug["date_resolved"],8,2),substr($bug["date_resolved"],0,4));
$bug["time_to_resolve"]=calcul_hours($time_resolved-$time_submitted);

function calcul_hours($temps)
{
  //combien d'heures ?
  $hours = floor($temps / 3600);

  //combien de minutes ?
  $min = floor(($temps - ($hours * 3600)) / 60);
  if ($min < 10)
    $min = "0".$min;

  //combien de secondes
  $sec = $temps - ($hours * 3600) - ($min * 60);
  if ($sec < 10)
    $sec = "0".$sec;
        
  return $hours."h".$min."m".$sec."s";
}

- Affichage d'une chaine de la forme YYYYMMJJ : sprintf("%02d/%02d/%04d", substr($date,6,2), substr($date,4,2), substr($date,0,4))
- Chaine YYYYMMJJ representant la date : $date_courante = date("YmdHis", time());
- Chaine YYYYMMJJ representant la date d'hier : $date=date("Ymd", mktime(0, 0, 0, date("m") , date("d") - 1, date("Y")));

h:m:s entre 2 dates 
//2005-06-27 10:28:21
$time_submitted=mktime(substr($bug["date_submitted"],11,2),substr($bug["date_submitted"],14,2),substr($bug["date_submitted"],17,2),substr($bug["date_submitted"],5,2),substr($bug["date_submitted"],8,2),substr($bug["date_submitted"],0,4));
		$time_resolved= mktime(substr($bug["date_resolved"],11,2),substr($bug["date_resolved"],14,2),substr($bug["date_resolved"],17,2),substr($bug["date_resolved"],5,2),substr($bug["date_resolved"],8,2),substr($bug["date_resolved"],0,4));
		$bug["time_to_resolve"]=calcul_hours($time_resolved-$time_submitted);
function calcul_hours($temps)
{
  //combien d'heures ?
  $hours = floor($temps / 3600);

  //combien de minutes ?
  $min = floor(($temps - ($hours * 3600)) / 60);
  if ($min < 10)
    $min = "0".$min;

  //combien de secondes
  $sec = $temps - ($hours * 3600) - ($min * 60);
  if ($sec < 10)
    $sec = "0".$sec;
        
  return $hours."h".$min."m".$sec."s";
}

Fonctions dates

date

PHP