mirror of
https://github.com/Dolibarr/dolibarr.git
synced 2025-12-27 20:01:26 +01:00
90 lines
2.2 KiB
PHP
90 lines
2.2 KiB
PHP
<?php
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/* Copyright (C) 2006-2011 Laurent Destailleur <eldy@users.sourceforge.net>
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* Copyright (C) 2022 Frédéric France <frederic.france@netlogic.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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* or see https://www.gnu.org/
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*/
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/**
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* \file htdocs/core/lib/profid.lib.php
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* \brief Set of functions for professional identifiers
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*/
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/**
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* Check if a string passes the Luhn agorithm test.
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* @param string|int $str string to check
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* @return bool True if the string passes the Luhn algorithm check, False otherwise
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* @since Dolibarr V20
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*/
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function isValidLuhn($str)
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{
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$str = (string) $str;
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$len = dol_strlen($str);
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$parity = $len % 2;
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$sum = 0;
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for ($i = $len-1; $i >= 0; $i--) {
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$d = (int) $str[$i];
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if ($i % 2 == $parity) {
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if (($d *= 2) > 9) {
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$d -= 9;
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}
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}
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$sum += $d;
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}
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return $sum % 10 == 0;
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}
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/**
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* Check the syntax validity of a SIREN.
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*
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* @param string $siren SIREN to check
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* @return boolean True if valid, False otherwise
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* @since Dolibarr V20
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*/
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function isValidSiren($siren)
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{
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$siren = trim($siren);
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$siren = preg_replace('/(\s)/', '', $siren);
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if (!is_numeric($siren) || dol_strlen($siren) != 9) {
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return false;
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}
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return isValidLuhn($siren);
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}
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/**
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* Check the syntax validity of a SIRET.
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*
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* @param string $siret SIRET to check
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* @return boolean True if valid, False otherwise
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* @since Dolibarr V20
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*/
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function isValidSiret($siret)
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{
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$siret = trim($siret);
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$siret = preg_replace('/(\s)/', '', $siret);
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if (!is_numeric($siret) || dol_strlen($siret) != 14) {
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return false;
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}
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// TODO: handle the exception of "La Poste" (356 000 000 #####)
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return isValidLuhn($siret);
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}
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