Podgląd pliku: / jacekk.info / code11.phps
<?php
/***************************************************
* Kody kreskowe - Code 11 *
***************************************************
* Wersja: 1.1 *
* Autor: Jacek Kowalski (http://jacekk.info) *
* *
* Strona WWW: http://jacekk.info/scripts/barcodes *
* *
* Utwór rozprowadzany na licencji *
* http://creativecommons.org/licenses/by-nc/2.5/ *
***************************************************/
/* Kodowanie znaków UTF-8 */
if(trim($_GET['kod'], '0123456789-')!='') {
echo 'Znaki inne niż cyfry i pauza';
die();
}
function checksum($kod) {
$chk = str_split(strrev($kod));
foreach($chk as $key => $val) {
if($val=='-') {
$val = 10;
}
$check += (1+$key)*$val;
}
$check = $check%11;
if($check==10) {
$check = '-';
}
return $kod.$check;
}
$_GET['kod'] = checksum($_GET['kod']);
if(strlen($_GET['kod'])>10) {
$_GET['kod'] = checksum($_GET['kod']);
}
$code = array(
'SS' => '1011001',
'BT' => '0',
'0' => '1010111',
'1' => '1101011',
'2' => '1001011',
'3' => '1100101',
'4' => '1011011',
'5' => '1101101',
'6' => '1001101',
'7' => '1010011',
'8' => '1101001',
'9' => '1110101',
'-' => '1011101'
);
function gen_binary($kod) {
global $code;
$kod = str_split($kod);
$ret = '';
foreach($kod as $key => $val) {
$ret .= $code[$val].$code['BT'];
}
return $ret;
}
function print_code($kod, $img) {
global $b;
$now = 0;
$kod = str_split($kod);
foreach($kod as $val) {
if($val==1) {
imageline($img, $now, 0, $now, 40, $b);
}
$now++;
}
}
$_GET['kod'] = $code['SS'].$code['BT'].gen_binary($_GET['kod']).$code['SS'];
$i = imagecreate(strlen($_GET['kod']), 40);
$w = imagecolorallocate($i, 255, 255, 255);
$b = imagecolorallocate($i, 0, 0, 0);
print_code($_GET['kod'], $i);
header('Content-type: image/gif');
imagegif($i);
?>
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