voku /
portable-utf8
| @@ 4836-4850 (lines=15) @@ | ||
| 4833 | * |
|
| 4834 | * @return string str with all alphabetic characters converted to lowercase. |
|
| 4835 | */ |
|
| 4836 | public static function strtolower($str, $encoding = 'UTF-8') |
|
| 4837 | { |
|
| 4838 | // init |
|
| 4839 | $str = (string)$str; |
|
| 4840 | ||
| 4841 | if (!isset($str[0])) { |
|
| 4842 | return ''; |
|
| 4843 | } |
|
| 4844 | ||
| 4845 | if ($encoding !== 'UTF-8') { |
|
| 4846 | $encoding = self::normalize_encoding($encoding); |
|
| 4847 | } |
|
| 4848 | ||
| 4849 | return \mb_strtolower($str, $encoding); |
|
| 4850 | } |
|
| 4851 | ||
| 4852 | /** |
|
| 4853 | * Generic case sensitive transformation for collation matching. |
|
| @@ 4874-4887 (lines=14) @@ | ||
| 4871 | * |
|
| 4872 | * @return string str with all alphabetic characters converted to uppercase. |
|
| 4873 | */ |
|
| 4874 | public static function strtoupper($str, $encoding = 'UTF-8') |
|
| 4875 | { |
|
| 4876 | $str = (string)$str; |
|
| 4877 | ||
| 4878 | if (!isset($str[0])) { |
|
| 4879 | return ''; |
|
| 4880 | } |
|
| 4881 | ||
| 4882 | if ($encoding !== 'UTF-8') { |
|
| 4883 | $encoding = self::normalize_encoding($encoding); |
|
| 4884 | } |
|
| 4885 | ||
| 4886 | return \mb_strtoupper($str, $encoding); |
|
| 4887 | } |
|
| 4888 | ||
| 4889 | /** |
|
| 4890 | * Translate characters or replace sub-strings. |
|
