commit | author | age
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175a52
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<?php |
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class convert { |
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static function ISBN13_to_ISBN10($kod) { |
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validate::EAN($kod); |
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if(substr($kod, 0, 3)=='978') { |
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$kod = substr($kod, 3, 9); |
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return strtoupper( $kod . checksum::ISBN($kod) ); |
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} |
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else |
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{ |
adfb2d
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errorclass::add('Kodu ISBN-13 '.$kod.' nie można zamienić na ISBN-10!'); |
175a52
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} |
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} |
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static function ISBN10_to_ISBN13($kod) { |
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validate::ISBN($kod); |
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$kod = '978' . substr($kod, 0, -1); |
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return $kod . checksum::EAN($kod); |
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} |
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static function ISSN13_to_ISSN8($kod) { |
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validate::EAN($kod); |
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$kod = substr($kod, 3, 7); |
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return strtoupper( $kod . checksum::ISSN($kod) ); |
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} |
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static function ISSN8_to_ISSN13($kod) { |
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validate::ISSN($kod); |
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$kod = '977' . substr($kod, 0, -1).'00'; |
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return $kod . checksum::EAN($kod); |
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} |
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} |
532779
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?> |