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<?php |
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namespace CelsoNery\EanUtils\Services\Traits; |
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/** |
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* This is a Traits to Validate a EAN/GTIN |
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*/ |
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trait EanUtil |
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{ |
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/** |
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* Start Method to validate EAN/GTIN |
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* |
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* @param string $ean |
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* @return bool |
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*/ |
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public function isValid(string $ean): bool |
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{ |
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if (strlen($ean) < 8 || ((strlen($ean) > 8) && (strlen($ean) < 13))) { |
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return false; |
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} |
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return (strlen($ean) == 8) ? $this->isValidEight($ean) : $this->isValidThirteen($ean); |
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} |
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/** |
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* Method to validate EAN/GTIN 13 |
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* |
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* @param string $ean |
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* @return bool |
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*/ |
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private function isValidThirteen(string $ean): bool |
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{ |
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if ((!preg_match("/^[0-9]{13}$/", $ean)) || (strlen($ean) < 13)) |
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return false; |
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$digits = str_split($ean); |
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$even = $digits[1] + $digits[3] + $digits[5] + $digits[7] + $digits[9] + $digits[11]; |
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$odd = $digits[0] + $digits[2] + $digits[4] + $digits[6] + $digits[8] + $digits[10]; |
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$result = $odd + $even * 3; |
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$checkSum = 10 - $result % 10; |
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return $checkSum == $digits[12]; |
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} |
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/** |
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* Method to validate EAN/GTIN 8 |
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* |
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* @param string $ean |
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* @return bool |
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*/ |
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private function isValidEight(string $ean): bool |
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{ |
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$ean = $this->toThirteen($ean); |
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return $this->isValidThirteen($ean); |
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} |
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/** |
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* Method to generate EAN/GTIN 8 fake |
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* |
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* @return string |
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*/ |
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public function fakeEan8(): string |
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{ |
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// TODO: Generate method to return a Ean8 fake |
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return ''; |
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} |
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/** |
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* Method to generate EAN/GTIN 13 fake |
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* |
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* @return string |
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*/ |
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public function fakeEan13(): string |
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{ |
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// TODO: Generate mehod to return a Ean13 fake |
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return ''; |
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} |
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/** |
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* Method to fix length EAN/GTIN and complete with 0 |
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* |
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* @param string $ean |
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* @return string |
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*/ |
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protected function fixLen(string $ean): string |
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{ |
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if (strlen($ean) < 8) { |
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return $this->toEight($ean); |
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} elseif (strlen($ean) > 8 && strlen($ean) < 13) { |
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return $this->toThirteen($ean); |
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} else { |
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return ''; |
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} |
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} |
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/** |
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* Method to fix length EAN/GTIN 8 and complete with 0 |
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* |
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* @param string $ean |
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* @return string |
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*/ |
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private function toEight(string $ean): string |
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{ |
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return str_pad($ean, 8, '0', STR_PAD_LEFT); |
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} |
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/** |
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* Method to fix length EAN/GTIN 13 and complete with 0 |
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* |
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* @param string $ean |
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* @return string |
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*/ |
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private function toThirteen(string $ean): string |
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{ |
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return str_pad($ean, 13, '0', STR_PAD_LEFT); |
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} |
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} |
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celsonery /
php-ean-utils
