What is whitespace in PHP
IntlChar :: isWhitespace
(PHP 7, PHP 8)
IntlChar :: isWhitespace - Check if code point is a whitespace character according to ICU
Determines if the specified code point is a whitespace character according to ICU.
A character is considered to be a ICU whitespace character if and only if it satisfies one of the following criteria:
- It is a Unicode Separator character (categories "Z" = "Zs" or "Zl" or "Zp"), but is not also a non-breaking space (U + 00A0 NBSP or U + 2007 Figure Space or U + 202F Narrow NBSP).
- It is U + 0009 HORIZONTAL TABULATION.
- It is U + 000A LINE FEED.
- It is U + 000B VERTICAL TABULATION.
- It is U + 000C FORM FEED.
- It is U + 000D CARRIAGE RETURN.
- It is U + 001C FILE SEPARATOR.
- It is U + 001D GROUP SEPARATOR.
- It is U + 001E RECORD SEPARATOR.
- It is U + 001F UNIT SEPARATOR.
The int value of the code point (e.g. for U + 2603 SNOWMAN) or the character encoded as UTF-8 string (e.g.).
Returns if is a whitespace character according to ICU, if not.
Example # 1 Testing different code points
The example shown above produces the following output:
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