functions_ch.lib.php

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<?php
/* Copyright (C) 2010 Laurent Destailleur         <eldy@users.sourceforge.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 * or see https://www.gnu.org/
 */

function dol_ch_controle_bvrb($bvrb)
{
  // Init array for control
  $tableau[0][0] = 0;
  $tableau[0][1] = 9;
  $tableau[0][2] = 4;
  $tableau[0][3] = 6;
  $tableau[0][4] = 8;
  $tableau[0][5] = 2;
  $tableau[0][6] = 7;
  $tableau[0][7] = 1;
  $tableau[0][8] = 3;
  $tableau[0][9] = 5;
  $tableau[0][10] = 0;

  $tableau[1][0] = 9;
  $tableau[1][1] = 4;
  $tableau[1][2] = 6;
  $tableau[1][3] = 8;
  $tableau[1][4] = 2;
  $tableau[1][5] = 7;
  $tableau[1][6] = 1;
  $tableau[1][7] = 3;
  $tableau[1][8] = 5;
  $tableau[1][9] = 0;
  $tableau[1][10] = 9;

  $tableau[2][0] = 4;
  $tableau[2][1] = 6;
  $tableau[2][2] = 8;
  $tableau[2][3] = 2;
  $tableau[2][4] = 7;
  $tableau[2][5] = 1;
  $tableau[2][6] = 3;
  $tableau[2][7] = 5;
  $tableau[2][8] = 0;
  $tableau[2][9] = 9;
  $tableau[2][10] = 8;

  $tableau[3][0] = 6;
  $tableau[3][1] = 8;
  $tableau[3][2] = 2;
  $tableau[3][3] = 7;
  $tableau[3][4] = 1;
  $tableau[3][5] = 3;
  $tableau[3][6] = 5;
  $tableau[3][7] = 0;
  $tableau[3][8] = 9;
  $tableau[3][9] = 4;
  $tableau[3][10] = 7;

  $tableau[4][0] = 8;
  $tableau[4][1] = 2;
  $tableau[4][2] = 7;
  $tableau[4][3] = 1;
  $tableau[4][4] = 3;
  $tableau[4][5] = 5;
  $tableau[4][6] = 0;
  $tableau[4][7] = 9;
  $tableau[4][8] = 4;
  $tableau[4][9] = 6;
  $tableau[4][10] = 6;

  $tableau[5][0] = 2;
  $tableau[5][1] = 7;
  $tableau[5][2] = 1;
  $tableau[5][3] = 3;
  $tableau[5][4] = 5;
  $tableau[5][5] = 0;
  $tableau[5][6] = 9;
  $tableau[5][7] = 4;
  $tableau[5][8] = 6;
  $tableau[5][9] = 8;
  $tableau[5][10] = 5;

  $tableau[6][0] = 7;
  $tableau[6][1] = 1;
  $tableau[6][2] = 3;
  $tableau[6][3] = 5;
  $tableau[6][4] = 0;
  $tableau[6][5] = 9;
  $tableau[6][6] = 4;
  $tableau[6][7] = 6;
  $tableau[6][8] = 8;
  $tableau[6][9] = 2;
  $tableau[6][10] = 4;

  $tableau[7][0] = 1;
  $tableau[7][1] = 3;
  $tableau[7][2] = 5;
  $tableau[7][3] = 0;
  $tableau[7][4] = 9;
  $tableau[7][5] = 4;
  $tableau[7][6] = 6;
  $tableau[7][7] = 8;
  $tableau[7][8] = 2;
  $tableau[7][9] = 7;
  $tableau[7][10] = 3;

  $tableau[8][0] = 3;
  $tableau[8][1] = 5;
  $tableau[8][2] = 0;
  $tableau[8][3] = 9;
  $tableau[8][4] = 4;
  $tableau[8][5] = 6;
  $tableau[8][6] = 8;
  $tableau[8][7] = 2;
  $tableau[8][8] = 7;
  $tableau[8][9] = 1;
  $tableau[8][10] = 2;

  $tableau[9][0] = 5;
  $tableau[9][1] = 0;
  $tableau[9][2] = 9;
  $tableau[9][3] = 4;
  $tableau[9][4] = 6;
  $tableau[9][5] = 8;
  $tableau[9][6] = 2;
  $tableau[9][7] = 7;
  $tableau[9][8] = 1;
  $tableau[9][9] = 3;
  $tableau[9][10] = 1;


  // Clean data
  $bv = str_replace(' ', '', $bvrb);

  // Make control
  $report = 0;
  while (dol_strlen($bv) > 1)
  {
    $match = substr($bv, 0, 1);
    $report = $tableau[$report][$match];
    $bv = substr($bv, 1);
  }
  $controle = $tableau[$report][10];

  return ($controle == $bv);
}