https://learn.microsoft.com/en-us/dotnet/api/system.char.iswhitespace?view=net-10.0&redirectedfrom=MSDN
Char.IsWhiteSpace Method (System) | Microsoft Learn
Indicates whether a Unicode character is categorized as white space.
charmethodsystemmicrosoftlearn
https://learn.microsoft.com/en-us/dotnet/api/system.char.iswhitespace?view=netframework-4.8.1&redirectedfrom=MSDN
Char.IsWhiteSpace Method (System) | Microsoft Learn
Indicates whether a Unicode character is categorized as white space.
charmethodsystemmicrosoftlearn
https://www.php.net/manual/zh/intlchar.iswhitespace.php
PHP: IntlChar::isWhitespace - Manual
Check if code point is a whitespace character according to ICU
phpmanual
https://www.php.net/manual/en/intlchar.iswhitespace.php
PHP: IntlChar::isWhitespace - Manual
Check if code point is a whitespace character according to ICU
phpmanual
https://learn.microsoft.com/cs-cz/dotnet/api/system.char.iswhitespace?view=netframework-4.8.1&viewFallbackFrom=net-9.0
Char.IsWhiteSpace Method (System) | Microsoft Learn
Indicates whether a Unicode character is categorized as white space.
charmethodsystemmicrosoftlearn