public static function makeFromInteger($integer)
    {
        if ($integer == 0) return static::$chars[0];

        $number = abs($integer);

        if ($integer < 0)
            throw new \InvalidArgumentException("Can not encode for negative integers");

        $string = '';

        $base = strlen(static::$chars);

        while ($number > 0) {
            $string .= static::$chars[$number % $base];

            $number = (int) ($number / $base);
        }

        return strrev($string);
    }
public static function makeFromInteger($integer)
    {
        if ($integer == 0) return static::$chars[0];

        $number = abs($integer);

        if ($integer < 0)
            throw new \InvalidArgumentException("Can not encode for negative integers");

        $string = '';

        $base = strlen(static::$chars);

        while ($number > 0) {
            $string .= static::$chars[$number % $base];

            $number = (int) ($number / $base);
        }

        return strrev($string);
    }
public static function makeFromInteger ( $ integer ) { if ( $ integer == 0 ) return static :: $ chars [ 0 ] ; $ number = abs ( $ integer ) ; if ( $ integer < 0 ) throw new \ InvalidArgumentException ( "Can not encode for negative integers" ) ; $ string = '' ; $ base = strlen ( static :: $ chars ) ; while ( $ number > 0 ) { $ string .= static :: $ chars [ $ number % $ base ] ; $ number = ( int ) ( $ number / $ base ) ; } return strrev ( $ string ) ; }
Make a unique string from an Integer

@param $integer
@return string
Make a unique string from an Integer