Zend_Validate_Barcode_Issn Class Reference

Inheritance diagram for Zend_Validate_Barcode_Issn:

Public Member Functions
	checkChars ($value)
	checksum ($value)
Public Member Functions inherited from Zend_Validate_Barcode_AdapterAbstract
	checkLength ($value)
	checkChars ($value)
	checksum ($value)
	getLength ()
	getCharacters ()
	getChecksum ()
	getCheck ()
	setCheck ($check)

Protected Member Functions
	_issn ($value)
Protected Member Functions inherited from Zend_Validate_Barcode_AdapterAbstract
	_gtin ($value)
	_identcode ($value)
	_code25 ($value)
	_postnet ($value)

Protected Attributes
	$_length = array(8, 13)
	$_characters = '0123456789X'
	$_checksum = '_gtin'
Protected Attributes inherited from Zend_Validate_Barcode_AdapterAbstract
	$_length
	$_characters
	$_checksum
	$_hasChecksum = true

Detailed Description

Definition at line 33 of file Issn.php.

Member Function Documentation

_issn()

_issn (   $value )

protected

Validates the checksum () ISSN implementation (reversed mod11)

Parameters

string

$value

The barcode to validate

Returns

boolean

Definition at line 94 of file Issn.php.

    {
        $checksum = substr($value, -1, 1);
        $values   = str_split(substr($value, 0, -1));
        $check    = 0;
        $multi    = 8;
        foreach($values as $token) {
            if ($token == 'X') {
                $token = 10;
            }

            $check += ($token * $multi);
            --$multi;
        }

        $check %= 11;
        $check  = 11 - $check;
        if ($check == $checksum) {
            return true;
        } else if (($check == 10) && ($checksum == 'X')) {
            return true;
        }

        return false;
    }

checkChars()

checkChars

(

$value

)

Allows X on length of 8 chars

Parameters

string

$value

The barcode to check for allowed characters

Returns

boolean

Implements Zend_Validate_Barcode_AdapterInterface.

Definition at line 59 of file Issn.php.

    {
        if (strlen($value) != 8) {
            if (strpos($value, 'X') !== false) {
                return false;
            }
        }

        return parent::checkChars($value);
    }

checksum()

checksum

(

$value

)

Validates the checksum

Parameters

string

$value

The barcode to check the checksum for

Returns

boolean

Implements Zend_Validate_Barcode_AdapterInterface.

Definition at line 76 of file Issn.php.

    {
        if (strlen($value) == 8) {
            $this->_checksum = '_issn';
        } else {
            $this->_checksum = '_gtin';
        }

        return parent::checksum($value);
    }

Field Documentation

$_characters

$_characters = '0123456789X'

protected

Definition at line 45 of file Issn.php.

$_checksum

$_checksum = '_gtin'

protected

Definition at line 51 of file Issn.php.

$_length

$_length = array(8, 13)

protected

Definition at line 39 of file Issn.php.

---

The documentation for this class was generated from the following file:

• vendor/magento/zendframework1/library/Zend/Validate/Barcode/Issn.php