29 lines
825 B
PHP
29 lines
825 B
PHP
<?php
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define('IN_CB', true);
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include('include/header.php');
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registerImageKey('code', 'BCGisbn');
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$characters = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9');
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?>
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<div id="validCharacters">
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<h3>Valid Characters</h3>
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<?php foreach ($characters as $character) {
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echo getButton($character);
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} ?>
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</div>
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<div id="explanation">
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<h3>Explanation</h3>
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<ul>
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<li>ISBN stands for International Standard Book Number.</li>
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<li>ISBN type is based on EAN-13.</li>
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<li>Previously, all ISBN were in EAN-10 format. EAN-13 uses the same encoding but may contain different data in the ISBN number.</li>
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<li>Composed by a GS1 prefix (for ISBN-13), a group identifier, a publisher code, an item number and a check digit.</li>
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</ul>
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</div>
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<?php
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include('include/footer.php');
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?>
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