Conditions | 5 |
Paths | 5 |
Total Lines | 23 |
Code Lines | 16 |
Lines | 0 |
Ratio | 0 % |
Changes | 1 | ||
Bugs | 0 | Features | 0 |
1 | <?php |
||
18 | public static function check($gtin, $length) |
||
19 | { |
||
20 | $gtin = self::unDecorate($gtin); |
||
21 | if (strlen($gtin) != $length) { |
||
22 | return false; |
||
23 | } |
||
24 | $expr = sprintf('/\\d{%d}/i', $length); |
||
25 | if (!preg_match($expr, $gtin)) { |
||
26 | return false; |
||
27 | } |
||
28 | $check = 0; |
||
29 | for ($i = 0; $i < $length; $i += 2) { |
||
30 | if ($length % 2 == 0) { |
||
31 | $check += 3 * substr($gtin, $i, 1); |
||
32 | $check += (int) substr($gtin, $i + 1, 1); |
||
33 | } else { |
||
34 | $check += (int) substr($gtin, $i, 1); |
||
35 | $check += 3 * substr($gtin, $i + 1, 1); |
||
36 | } |
||
37 | } |
||
38 | |||
39 | return $check % 10 == 0; |
||
40 | } |
||
41 | |||
57 |