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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