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Egn.php
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<?php
/**
* Validation and generation of EGN (personal identification numbers for Bulgarian citizens)
* Ivan Tcholakov <[email protected]>, May, 2013.
* This piece of code is basen upon the following origin: http://georgi.unixsol.org/programs/egn.php
* The license stays the same.
* Code repository: https://github.com/ivantcholakov/egn
*
* Валидация и генериране на ЕГН
* Иван Чолаков <[email protected]>, май 2013.
* Кодът е базиран на следния първоизточник: http://georgi.unixsol.org/programs/egn.php
* Лицензът остава същият.
* Хранилище на кода: https://github.com/ivantcholakov/egn
*/
# Информация, проверка и генератор за единни граждански номера (ЕГН)
# Версия 1.50 (30-Sep-2006)
#
# За контакти:
# E-mail: [email protected]
# WWW : http://georgi.unixsol.org/
# Source: http://georgi.unixsol.org/programs/egn.php
#
# Copyright (c) 2006 Georgi Chorbadzhiyski
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
class Egn {
protected static $EGN_WEIGHTS = array(2, 4, 8, 5, 10, 9, 7, 3, 6);
protected static $EGN_REGIONS = array(
'Благоевград' => 43, /* от 000 до 043 */
'Бургас' => 93, /* от 044 до 093 */
'Варна' => 139, /* от 094 до 139 */
'Велико Търново' => 169, /* от 140 до 169 */
'Видин' => 183, /* от 170 до 183 */
'Враца' => 217, /* от 184 до 217 */
'Габрово' => 233, /* от 218 до 233 */
'Кърджали' => 281, /* от 234 до 281 */
'Кюстендил' => 301, /* от 282 до 301 */
'Ловеч' => 319, /* от 302 до 319 */
'Монтана' => 341, /* от 320 до 341 */
'Пазарджик' => 377, /* от 342 до 377 */
'Перник' => 395, /* от 378 до 395 */
'Плевен' => 435, /* от 396 до 435 */
'Пловдив' => 501, /* от 436 до 501 */
'Разград' => 527, /* от 502 до 527 */
'Русе' => 555, /* от 528 до 555 */
'Силистра' => 575, /* от 556 до 575 */
'Сливен' => 601, /* от 576 до 601 */
'Смолян' => 623, /* от 602 до 623 */
'София - град' => 721, /* от 624 до 721 */
'София - окръг' => 751, /* от 722 до 751 */
'Стара Загора' => 789, /* от 752 до 789 */
'Добрич (Толбухин)' => 821, /* от 790 до 821 */
'Търговище' => 843, /* от 822 до 843 */
'Хасково' => 871, /* от 844 до 871 */
'Шумен' => 903, /* от 872 до 903 */
'Ямбол' => 925, /* от 904 до 925 */
'Друг/Неизвестен' => 999, /* от 926 до 999 - Такъв регион понякога се ползва при
родени преди 1900, за родени в чужбина
или ако в даден регион се родят повече
деца от предвиденото. Доколкото ми е
известно няма правило при ползването
на 926 - 999 */
);
protected static $EGN_REGIONS_LAST_NUM = array();
protected static $EGN_REGIONS_FIRST_NUM = array();
protected static $MONTHS_BG = array(
1 => 'януари',
2 => 'февруари',
3 => 'март',
4 => 'април',
5 => 'май',
6 => 'юни',
7 => 'юли',
8 => 'август',
9 => 'септември',
10 => 'октомври',
11 => 'ноември',
12 => 'декември'
);
protected static function initialize() {
$first_region_num = 0;
foreach (self::$EGN_REGIONS as $region => $last_region_num) {
self::$EGN_REGIONS_FIRST_NUM[$first_region_num] = $last_region_num;
self::$EGN_REGIONS_LAST_NUM[$last_region_num] = $first_region_num;
$first_region_num = $last_region_num + 1;
}
}
protected static function EGN_REGIONS_LAST_NUM() {
if (empty(self::$EGN_REGIONS_LAST_NUM)) {
self::initialize();
}
return self::$EGN_REGIONS_LAST_NUM;
}
protected static function EGN_REGIONS_FIRST_NUM() {
if (empty(self::$EGN_REGIONS_FIRST_NUM)) {
self::initialize();
}
return self::$EGN_REGIONS_FIRST_NUM;
}
/* Check if EGN is valid */
/* See: http://www.grao.bg/esgraon.html */
public static function valid($egn) {
$egn = (string) $egn;
// Added by Ivan Tcholakov, 25-JUN-2017.
if (!ctype_digit($egn)) {
return false;
}
//
if (strlen($egn) != 10) {
return false;
}
$year = substr($egn, 0, 2);
$mon = substr($egn, 2, 2);
$day = substr($egn, 4, 2);
if ($mon > 40) {
if (!checkdate($mon - 40, $day, $year + 2000)) return false;
} elseif ($mon > 20) {
if (!checkdate($mon - 20, $day, $year + 1800)) return false;
} else {
if (!checkdate($mon, $day, $year + 1900)) return false;
}
$checksum = substr($egn, 9, 1);
$egnsum = 0;
for ($i = 0; $i < 9; $i++) {
$egnsum += substr($egn, $i, 1) * self::$EGN_WEIGHTS[$i];
}
$valid_checksum = $egnsum % 11;
if ($valid_checksum == 10) {
$valid_checksum = 0;
}
if ($checksum == $valid_checksum) {
return true;
}
return false;
}
/* Return array with EGN info */
public static function parse($egn) {
$egn = (string) $egn;
if (!self::valid($egn)) {
return false;
}
$ret = array();
$ret['year'] = substr($egn, 0, 2);
$ret['month'] = substr($egn, 2, 2);
$ret['day'] = substr($egn, 4, 2);
if ($ret['month'] > 40) {
$ret['month'] -= 40;
$ret['year'] += 2000;
}
elseif ($ret['month'] > 20) {
$ret['month'] -= 20;
$ret['year'] += 1800;
} else {
$ret['year'] += 1900;
}
$ret['birthday_text'] = (int)$ret['day'].' '.self::$MONTHS_BG[(int)$ret['month']].' '.$ret['year'].' г.';
// Added by Ivan Tcholakov, 24-AUG-2013.
$ret['birthday'] = sprintf('%04d', (int) $ret['year']).'-'.sprintf('%02d', (int) $ret['month']).'-'.sprintf('%02d', (int) $ret['day']);
//
$region = substr($egn, 6, 3);
$ret['region_num'] = $region;
$ret['sex'] = substr($egn, 8, 1) % 2;
$ret['sex_text'] = 'жена';
if (!$ret['sex']) {
$ret['sex_text'] = 'мъж';
}
// Added by Ivan Tcholakov, 24-AUG-2013.
$ret['gender'] = (bool) $ret['sex'] ? 'f' : 'm';
//
$first_region_num = 0;
foreach (self::$EGN_REGIONS as $region_name => $last_region_num) {
if ($region >= $first_region_num && $region <= $last_region_num) {
$ret['region_text'] = $region_name;
break;
}
$first_region_num = $last_region_num+1;
}
if (substr($egn,8,1) % 2 != 0) {
$region--;
}
$ret['birthnumber'] = ($region - $first_region_num) / 2 + 1;
return $ret;
}
/* Return text with EGN info */
public static function info($egn) {
if (!self::valid($egn)) {
return "<strong>" . htmlspecialchars($egn) ."</strong> невалиден ЕГН";
}
$data = self::parse($egn);
$ret = "<strong>".htmlspecialchars($egn)."</strong> е ЕГН на <strong>{$data['sex_text']}</strong>, ";
$ret .= "роден".($data["sex"]?"а":"")." на <strong>{$data['birthday_text']}</strong> в ";
$ret .= "регион <strong>{$data['region_text']}</strong> ";
if ($data["birthnumber"]-1) {
$ret .= "като преди ".($data["sex"]?"нея":"него")." ";
if ($data["birthnumber"]-1 > 1) {
$ret .= "в този ден и регион са се родили <strong>".($data["birthnumber"]-1)."</strong>";
$ret .= $data["sex"]?" момичета":" момчета";
} else {
$ret .= "в този ден и регион се е родило <strong>1</strong>";
$ret .= $data["sex"]?" момиче":" момче";
}
} else {
$ret .= "като е ".($data["sex"]?"била":"бил")." ";
$ret .= "<strong>първото ".($data["sex"]?" момиче":" момче")."</strong> ";
$ret .= "родено в този ден и регион";
}
return $ret;
}
/* Generate EGN. When parameter is 0 || false it is randomized */
public static function generate($day = 0, $mon = 0, $year = 0, $sex = 0, $region = false) {
$EGN_REGIONS_FIRST_NUM = self::EGN_REGIONS_FIRST_NUM();
$day = $day > 0 ? min($day, 31) : ($day < 0 ? 0 : $day);
$mon = $mon > 0 ? min($mon, 12) : ($mon < 0 ? 0 : $mon);
$year= $year > 1799 ? min($year, 2099) : ($year == 0 ? $year : 1800);
$region = isset($EGN_REGIONS_FIRST_NUM[$region]) ? $region : false;
$iter = 0;
do {
$gday = $day ? $day : rand(1, 31);
$gmon = $mon ? $mon : rand(1, 12);
$gyear = $year ? $year : rand(1900, 2010);
$iter++;
} while (!checkdate($gmon, $gday, $gyear) && $iter < 3);
$cent = $gyear - ($gyear % 100);
if ($iter > 3) {
return false;
}
/* Fixes for other centuries */
switch ($cent) {
case 1800: $gmon += 20; break;
case 2000: $gmon += 40; break;
}
/* Generate region/sex */
if ($region === false) {
$gregion = rand(0, 999);
} else {
$gregion = rand($region, $EGN_REGIONS_FIRST_NUM[$region]);
}
/* Make it odd */
if ($sex == 1 && ($gregion % 2 != 0)) {
$gregion--;
}
/* Make it even */
if ($sex == 2 && ($gregion % 2 == 0)) {
$gregion++;
}
/* Create EGN */
$egn = str_pad($gyear - $cent, 2, '0', STR_PAD_LEFT) .
str_pad($gmon, 2, '0', STR_PAD_LEFT) .
str_pad($gday, 2, '0', STR_PAD_LEFT) .
str_pad($gregion, 3, '0', STR_PAD_LEFT);
/* Calculate checksum */
$egnsum = 0;
for ($i = 0; $i < 9; $i++) {
$egnsum += substr($egn, $i, 1) * self::$EGN_WEIGHTS[$i];
}
$valid_checksum = $egnsum % 11;
if ($valid_checksum == 10) {
$valid_checksum = 0;
}
$egn .= $valid_checksum;
return $egn;
}
// Additional methods by Ivan Tcholakov.
public static function get_gender($string) {
if (self::is_foreigner($string)) {
return null;
}
if (!self::valid($string)) {
return null;
}
$info = self::parse($string);
return $info['gender'];
}
public static function get_birthday($string) {
if (!self::valid($string)) {
return null;
}
$info = self::parse($string);
return $info['birthday'];
}
/* Is it a personal number of foreigner? A simple check. */
public static function is_foreigner($string) {
$string = (string) $string;
if (!ctype_digit($string)) {
return false;
}
if (self::valid($string)) {
return false;
}
if (strlen($string) == 10) {
$pnf_weights = array(21, 19, 17, 13, 11, 9, 7, 3, 1);
$checksum = substr($string, 9, 1);
$pnfsum = 0;
for ($i = 0; $i < 9; $i++) {
$pnfsum += substr($string, $i, 1) * $pnf_weights[$i];
}
$valid_checksum = $pnfsum % 10;
if ($checksum == $valid_checksum) {
return true;
}
return false;
}
if (strlen($string) == 11) {
if (substr($string, 0, 3) == '229') {
return true;
}
return false;
}
return false;
}
}