The LengthException class

(PHP 5 >= 5.1.0)

Introduction

Exception thrown if a length is invalid.

Class synopsis

LengthException extends LogicException {

/* Inherited properties */

protected string $message ;

protected int $code ;

protected string $file ;

protected int $line ;

/* Inherited methods */

final public string Exception::getMessage ( void )

final public Exception Exception::getPrevious ( void )

final public mixed Exception::getCode ( void )

final public string Exception::getFile ( void )

final public int Exception::getLine ( void )

final public array Exception::getTrace ( void )

final public string Exception::getTraceAsString ( void )

public string Exception::__toString ( void )

final private void Exception::__clone ( void )

}

Коментарии

Jan 26

Автор: evguenia dot chagnon at gmail dot com


protected static function isbnChecksum($input)

    {

        // We're calculating check digit for ISBN-10

        // so, the length of the input should be 9

        $length = 9;

        if (strlen($input) !== $length) {

            throw new \LengthException(sprintf('Input length should be equal to %d', $length));

        }

        $digits = str_split($input);

        array_walk(

            $digits,

            function (&$digit, $position) {

                $digit = (10 - $position) * $digit;

            }

        );

        $result = (11 - array_sum($digits) % 11) % 11;

        // 10 is replaced by X

        return ($result < 10)?$result:'X';

    }