can't find why function is undefined, php error

Question

I'm trying to use the php url shortener from here : https://github.com/delight-im/ShortURL

I just copyed this code and tried with a number, but I've a php error "Call to undefined function encode()". I can't find the problem.

Can you help me

Here is my code :

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Document sans titre</title>
</head>

<body>

<?php

/**
 * ShortURL: Bijective conversion between natural numbers (IDs) and short strings
 *
 * ShortURL::encode() takes an ID and turns it into a short string
 * ShortURL::decode() takes a short string and turns it into an ID
 *
 * Features:
 * + large alphabet (51 chars) and thus very short resulting strings
 * + proof against offensive words (removed 'a', 'e', 'i', 'o' and 'u')
 * + unambiguous (removed 'I', 'l', '1', 'O' and '0')
 *
 * Example output:
 * 123456789 <=> pgK8p
 *
 * Source: https://github.com/delight-im/ShortURL (Apache License 2.0)
 */
class ShortURL {
    const ALPHABET = '23456789bcdfghjkmnpqrstvwxyzBCDFGHJKLMNPQRSTVWXYZ-_';
    const BASE = 51; // strlen(self::ALPHABET)

    public static function encode($num) {
        $str = '';
        while ($num > 0) {
            $str = substr(self::ALPHABET, ($num % self::BASE), 1) . $str;
            $num = floor($num / self::BASE);
        }
        return $str;
    }

   public static function decode($str) {
        $num = 0;
        $len = strlen($str);
        for ($i = 0; $i < $len; $i++) {
            $num = $num * self::BASE + strpos(self::ALPHABET, $str[$i]);
        }
        return $num;
    }

}
ShortURL.encode(5356);


?>
</body>
</html>

Do you see the comments on top of that class and do you see how you are doing it ? — ODelibalta
– ODelibalta, Commented Nov 6, 2015 at 19:00

Artem Layko · Accepted Answer · 2015-11-06 19:00:24Z

4

Use it like that:

ShortURL::encode(5356);

answered Nov 6, 2015 at 19:00

Artem Layko

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