Jalali dates and Vice versa. */ class dateConverter { public $gMonthDays = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); public $jMonthDays = array(31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29); public $persianMonths = array("فروردین", "اردیبهشت", "خرداد", "تیر", "مرداد", "شهریور", "مهر", "آبان", "آذر", "دی", "بهمن", "اسفند"); /** * divider * */ private function div($a,$b) { return (int) ($a / $b); } /** * Converts Gregorian date to Jalali date * * @ 4 arguments * 1- year * 2- month * 3- day * 4- bool (true return string, false returns array) */ public function toJalali ($g_y, $g_m, $g_d,$str) { $gy = $g_y-1600; $gm = $g_m-1; $gd = $g_d-1; $g_day_no = 365*$gy+$this->div($gy+3,4)-$this->div($gy+99,100)+$this->div($gy+399,400); for ($i=0; $i < $gm; ++$i) $g_day_no += $this->gMonthDays[$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 = $this->div($j_day_no, 12053); /* 12053 = 365*33 + 32/4 */ $j_day_no = $j_day_no % 12053; $jy = 979+33*$j_np+4*$this->div($j_day_no,1461); /* 1461 = 365*4 + 4/4 */ $j_day_no %= 1461; if ($j_day_no >= 366) { $jy += $this->div($j_day_no-1, 365); $j_day_no = ($j_day_no-1)%365; } for ($i = 0; $i < 11 && $j_day_no >= $this->jMonthDays[$i]; ++$i) $j_day_no -= $this->jMonthDays[$i]; $jm = $i+1; $jd = $j_day_no+1; if($str) return $jy.'/'.$jm.'/'.$jd ; return array($jy, $jm, $jd); } /** * Converts Gregorian date to Jalali date * * @ 1 argument * 1- array including [year, month, day] */ public function toJalaliFormatted($dateArray) { $y = $dateArray[0]; $m = $dateArray[1]; $d = $dateArray[2]; $jalaliDate = $this->toJalali($y, $m, $d, false); return sprintf("%u %s %u",$jalaliDate[0],$this->persianMonths[$jalaliDate[1]-1],$jalaliDate[2]); } /** * Converts Jalali date to Gregorian date * * @ 4 arguments * 1- year * 2- month * 3- day * 4- bool (true return string, false returns array) */ public function toGregorian($j_y, $j_m, $j_d,$str) { $jy = (int)($j_y)-979; $jm = (int)($j_m)-1; $jd = (int)($j_d)-1; $j_day_no = 365*$jy + $this->div($jy, 33)*8 + $this->div($jy%33+3, 4); for ($i=0; $i < $jm; ++$i) $j_day_no += $this->jMonthDays[$i]; $j_day_no += $jd; $g_day_no = $j_day_no+79; $gy = 1600 + 400*$this->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--; $gy += 100*$this->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; } $gy += 4*$this->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 += $this->div($g_day_no, 365); $g_day_no = $g_day_no % 365; } for ($i = 0; $g_day_no >= $this->gMonthDays[$i] + ($i == 1 && $leap); $i++) $g_day_no -= $this->gMonthDays[$i] + ($i == 1 && $leap); $gm = $i+1; $gd = $g_day_no+1; if($str) return $gy.'/'.$gm.'/'.$gd ; return array($gy, $gm, $gd); } /** * Compares Jalali date to Gregorian date * * @ 2 arguments * 1- jalali date (string) * 2- gregorian date (string) */ public function compareDate($_date_mix_jalaly,$_date_mix_gregorian) { $_date_arr_jalaly = explode('/', $_date_mix_jalaly); $_date_arr_gregorian = explode('/', $_date_mix_gregorian); $arr_jtg = $this->toGregorian($_date_arr_jalaly[0],$_date_arr_jalaly[1],$_date_arr_jalaly[2],false); if($_date_arr_gregorian[0]> $arr_jtg[0]) { return false; } else if($_date_arr_gregorian[0]== $arr_jtg[0] && $_date_arr_gregorian[1]>$arr_jtg[1]) { return false; } else if($_date_arr_gregorian[0]== $arr_jtg[0] && $_date_arr_gregorian[1]==$arr_jtg[1] && $_date_arr_gregorian[2]>$arr_jtg[2]) { return false; } return true ; } } // two different dates to test functionality $gd = [2022,07,19]; $jd = [1410,10,20]; // instansiating the class and using methods $dConverter = new dateConverter(); $j_date = $dConverter->toJalali($gd[0], $gd[1], $gd[2], true); $j_formatted = $dConverter->toJalaliFormatted($gd); $g_date = $dConverter->toGregorian($jd[0], $jd[1], $jd[2], true); $comparedDates = $dConverter->compareDate($j_date, $g_date); // print the results echo "Converting Gregorian ( $gd[0]/$gd[1]/$gd[2] ) to Jalali: ( $j_date )

"; echo "Converting Gregorian ( $gd[0]/$gd[1]/$gd[2] ) to Jalali Formatted: ( $j_formatted )

"; echo "Converting Jalali ( $jd[0]/$jd[1]/$jd[2] ) to Gregorian: ( $g_date )

"; // comparing two dates if ($dConverter->compareDate($j_date, $g_date)) { echo "Both Dates Match... $j_date == $g_date "; } else { echo "Comparing Dates didn't Match... $j_date != $g_date "; } ?>

Converting Gregorian »» Jalali date and Vice versa