* language, script or variant codes actually exist in the repositories.
*
* Based on regexes by Mark Davis of the Unicode Consortium:
- * http://unicode.org/repos/cldr/trunk/tools/java/org/unicode/cldr/util/data/langtagRegex.txt
+ * https://www.unicode.org/repos/cldr/trunk/tools/java/org/unicode/cldr/util/data/langtagRegex.txt
*
* @param string $code
* @param bool $lenient Whether to allow '_' as separator. The default is only '-'.
* Gets directionality of the first strongly directional codepoint, for embedBidi()
*
* This is the rule the BIDI algorithm uses to determine the directionality of
- * paragraphs ( http://unicode.org/reports/tr9/#The_Paragraph_Level ) and
- * FSI isolates ( http://unicode.org/reports/tr9/#Explicit_Directional_Isolates ).
+ * paragraphs ( https://www.unicode.org/reports/tr9/#The_Paragraph_Level ) and
+ * FSI isolates ( https://www.unicode.org/reports/tr9/#Explicit_Directional_Isolates ).
*
* TODO: Does not handle BIDI control characters inside the text.
* TODO: Does not handle unallocated characters.