Change Gregorian Date To Shamsi(Jalali) Date

Hi,

i am developer of zen-cart (the great !) to persian language i translated language files and modified templates and css changes for persian languages but i should change date format from Gregorian to Shamsi ( jalali) date

this is persian date function :

function pdate($type,$maket="now")
{
	//set 1 if you want translate number to farsi or if you don't like set 0
	$transnumber=0;
	///chosse your timezone
	$TZhours=0;
	$TZminute=0;

	if($maket=="now"){
		$year=date("Y");
		$month=date("m");
		$day=date("d");
		list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
		$maket=pmktime(date("h")+$TZhours,date("i")+$TZminute,date("s"),$jmonth,$jday,$jyear);
	}else{
		$maket+=$TZhours*3600+$TZminute*60;
		$date=date("Y-m-d",maket);
		list( $year, $month, $day ) = preg_split ( '/-/', $date );

		list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
		}

	$need= $maket;
	$year=date("Y",$need);
	$month=date("m",$need);
	$day=date("d",$need);
	$i=0;
	while($i<strlen($type))
	{
		$subtype=substr($type,$i,1);
		switch ($subtype)
		{

			case "A":
				$result1=date("a",$need);
				if($result1=="pm") $result.= "بعدازظهر";
				else $result.="قبل‏ازظهر";
				break;

			case "a":
				$result1=date("a",$need);
				if($result1=="pm") $result.= "ب.ظ";
				else $result.="ق.ظ";
				break;
			case "d":
				list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
				if($jday<10)$result1="0".$jday;
				else 	$result1=$jday;
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "D":
				$result1=date("D",$need);
				if($result1=="Thu") $result1="پ";
				else if($result1=="Sat") $result1="ش";
				else if($result1=="Sun") $result1="ى";
				else if($result1=="Mon") $result1="د";
				else if($result1=="Tue") $result1="س";
				else if($result1=="Wed") $result1="چ";
				else if($result1=="Thu") $result1="پ";
				else if($result1=="Fri") $result1="ج";
				$result.=$result1;
				break;
			case"F":
				list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
				$result.=monthname($jmonth);
				break;
			case "g":
				$result1=date("g",$need);
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "G":
				$result1=date("G",$need);
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
				case "h":
				$result1=date("h",$need);
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "H":
				$result1=date("H",$need);
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "i":
				$result1=date("i",$need);
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "j":
				list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
				$result1=$jday;
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "l":
				$result1=date("l",$need);
				if($result1=="Saturday") $result1="شنبه";
				else if($result1=="Sunday") $result1="يكشنبه";
				else if($result1=="Monday") $result1="دوشنبه";
				else if($result1=="Tuesday") $result1="سه شنبه";
				else if($result1=="Wednesday") $result1="چهارشنبه";
				else if($result1=="Thursday") $result1="پنجشنبه";
				else if($result1=="Friday") $result1="جمعه";
				$result.=$result1;
				break;
			case "m":
				list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
				if($jmonth<10) $result1="0".$jmonth;
				else	$result1=$jmonth;
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "M":
				list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
				$result.=monthname($jmonth);
				break;
			case "n":
				list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);	
				$result1=$jmonth;
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "s":
				$result1=date("s",$need);
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "S":
				$result.="ام";
				break;
			case "t":
				$result.=lastday ($month,$day,$year);
				break;
			case "w":
				$result1=date("w",$need);
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "y":
				list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);	
				$result1=substr($jyear,2,4);
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;
			case "Y":
				list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
				$result1=$jyear;
				if($transnumber==1) $result.=Convertnumber2farsi($result1);
				else $result.=$result1;
				break;		
			default:
				$result.=$subtype;
		}
	$i++;
	}
	return $result;
}



function pmktime($hour,$minute,$second,$jmonth,$jday,$jyear)
{
	list( $year, $month, $day ) = jalali_to_gregorian($jyear, $jmonth, $jday);
	$i=mktime($hour,$minute,$second,$month,$day,$year);	
	return $i;
}


///Find Day Begining Of Month
function mstart($month,$day,$year)
{
	list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
	list( $year, $month, $day ) = jalali_to_gregorian($jyear, $jmonth, "1");
	$timestamp=mktime(0,0,0,$month,$day,$year);
	return date("w",$timestamp);
}

//Find Number Of Days In This Month
function lastday ($month,$day,$year)
{
	$lastdayen=date("d",mktime(0,0,0,$month+1,0,$year));
	list( $jyear, $jmonth, $jday ) = gregorian_to_jalali($year, $month, $day);
	$lastdatep=$jday;
	$jday=$jday2;
	while($jday2!="1")
	{
		if($day<$lastdayen)
		{
			$day++;
			list( $jyear, $jmonth, $jday2 ) = gregorian_to_jalali($year, $month, $day);
			if($pdate2=="1") break;
			if($pdate2!="1") $lastdatep++;
		}
		else
		{ 
			$day=0;
			$month++;
			if($month==13) 
			{
					$month="1";
					$year++;
			}
		}

	}
	return $lastdatep-1;
}

//translate number of month to name of month
function monthname($month)
{

    if($month=="01") return "فروردين";

    if($month=="02") return "ارديبهشت";

    if($month=="03") return "خرداد";

    if($month=="04") return  "تير";

    if($month=="05") return "مرداد";

    if($month=="06") return "شهريور";

    if($month=="07") return "مهر";

    if($month=="08") return "آبان";

    if($month=="09") return "آذر";

    if($month=="10") return "دي";

    if($month=="11") return "بهمن";

    if($month=="12") return "اسفند";
}

////here convert to  number in persian
function Convertnumber2farsi($srting) 
{
	$num0="۰";
	$num1="۱";
	$num2="۲";
	$num3="۳";
	$num4="۴";
	$num5="۵";
	$num6="۶";
	$num7="۷";
	$num8="۸";
	$num9="۹";
	
	$stringtemp="";
	$len=strlen($srting);
	for($sub=0;$sub<$len;$sub++)
	{
	 if(substr($srting,$sub,1)=="0")$stringtemp.=$num0;
	 elseif(substr($srting,$sub,1)=="1")$stringtemp.=$num1;
	 elseif(substr($srting,$sub,1)=="2")$stringtemp.=$num2;
	 elseif(substr($srting,$sub,1)=="3")$stringtemp.=$num3;
	 elseif(substr($srting,$sub,1)=="4")$stringtemp.=$num4;
	 elseif(substr($srting,$sub,1)=="5")$stringtemp.=$num5;
	 elseif(substr($srting,$sub,1)=="6")$stringtemp.=$num6;
	 elseif(substr($srting,$sub,1)=="7")$stringtemp.=$num7;
	 elseif(substr($srting,$sub,1)=="8")$stringtemp.=$num8;
	 elseif(substr($srting,$sub,1)=="9")$stringtemp.=$num9;
	 else $stringtemp.=substr($srting,$sub,1);

	}
return   $stringtemp;

}///end conver to number in persian






function div($a,$b) {
    return (int) ($a / $b);
}

function gregorian_to_jalali ($g_y, $g_m, $g_d) 
{
    $g_days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); 
    $j_days_in_month = array(31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29);     
    


   

   $gy = $g_y-1600; 
   $gm = $g_m-1; 
   $gd = $g_d-1; 

   $g_day_no = 365*$gy+div($gy+3,4)-div($gy+99,100)+div($gy+399,400); 

   for ($i=0; $i < $gm; ++$i) 
      $g_day_no += $g_days_in_month[$i]; 
   if ($gm>1 && (($gy%4==0 && $gy%100!=0) || ($gy%400==0))) 
      /* leap and after Feb */ 
      $g_day_no++; 
   $g_day_no += $gd; 

   $j_day_no = $g_day_no-79; 

   $j_np = div($j_day_no, 12053); /* 12053 = 365*33 + 32/4 */ 
   $j_day_no = $j_day_no % 12053; 

   $jy = 979+33*$j_np+4*div($j_day_no,1461); /* 1461 = 365*4 + 4/4 */ 

   $j_day_no %= 1461; 

   if ($j_day_no >= 366) { 
      $jy += div($j_day_no-1, 365); 
      $j_day_no = ($j_day_no-1)%365; 
   } 

   for ($i = 0; $i < 11 && $j_day_no >= $j_days_in_month[$i]; ++$i) 
      $j_day_no -= $j_days_in_month[$i]; 
   $jm = $i+1; 
   $jd = $j_day_no+1; 

   return array($jy, $jm, $jd); 
} 

function jalali_to_gregorian($j_y, $j_m, $j_d) 
{ 
    $g_days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); 
    $j_days_in_month = array(31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29);
    
   

   $jy = $j_y-979; 
   $jm = $j_m-1; 
   $jd = $j_d-1; 

   $j_day_no = 365*$jy + div($jy, 33)*8 + div($jy%33+3, 4); 
   for ($i=0; $i < $jm; ++$i) 
      $j_day_no += $j_days_in_month[$i]; 

   $j_day_no += $jd; 

   $g_day_no = $j_day_no+79; 

   $gy = 1600 + 400*div($g_day_no, 146097); /* 146097 = 365*400 + 400/4 - 400/100 + 400/400 */ 
   $g_day_no = $g_day_no % 146097; 

   $leap = true; 
   if ($g_day_no >= 36525) /* 36525 = 365*100 + 100/4 */ 
   { 
      $g_day_no--; 
      $gy += 100*div($g_day_no,  36524); /* 36524 = 365*100 + 100/4 - 100/100 */ 
      $g_day_no = $g_day_no % 36524; 

      if ($g_day_no >= 365) 
         $g_day_no++; 
      else 
         $leap = false; 
   } 

   $gy += 4*div($g_day_no, 1461); /* 1461 = 365*4 + 4/4 */ 
   $g_day_no %= 1461; 

   if ($g_day_no >= 366) { 
      $leap = false; 

      $g_day_no--; 
      $gy += div($g_day_no, 365); 
      $g_day_no = $g_day_no % 365; 
   } 

   for ($i = 0; $g_day_no >= $g_days_in_month[$i] + ($i == 1 && $leap); $i++) 
      $g_day_no -= $g_days_in_month[$i] + ($i == 1 && $leap); 
   $gm = $i+1; 
   $gd = $g_day_no+1; 

   return array($gy, $gm, $gd); 
}

now do you can help me for this ? i changed date of phpbb , mybb and other with this founction but i could not change zen-cart date to persian ! please help me !

A little research shows that this function is not native to PHP, so it needs to be run as part of an application where you wish to use it. I presume you are doing this, but maybe Zen Cart is structured differently from the other apps you have used it in. I see that the class for this

class PersianDateHelper extends Helper

is based on a class called Helper... The Zen Cart structure has classes extending "base" in order to use the observer/notifier system (see the wiki for details). Could this have anything to do with the problem?

I hope DrByte will be able to shed real light on the subject.

i dont know zen-cart structure completely i cant write Helper Class for this system ! if you can please help me !

but i found that dates generates in functions_general.php and function zen_date_long and function zen_date_short from $raw_date ! with YYYY-MM-DD HH:MM:SS format ! i want enter this raw date in persian date function do you have any idea about it ?

Zen Cart's date functions in the current version are not class-based.
You'll have to edit the functions files themselves to accomplish what you desire.

where are date functions in zen-cart ? (in wich files ? )

So is it possible to just show the month.

Say show only Customers Birthday Month?

Thanks