IntlChar::isWhitespace

(PHP 7)

Check if code point is a whitespace character according to ICU

public static bool IntlChar::isWhitespace ( mixed $codepoint )

Determines if the specified code point is a whitespace character according to ICU.

A character is considered to be a Java 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.

Parameters:

codepoint

The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

Returns:

Returns TRUE if codepoint is a whitespace character according to ICU, FALSE if not.

Examples:

Testing different code points

<?php
var_dump(IntlChar::iswhitespace("A"));
var_dump(IntlChar::iswhitespace(" "));
var_dump(IntlChar::iswhitespace("\n"));
var_dump(IntlChar::iswhitespace("\t"));
var_dump(IntlChar::iswhitespace("\u{00A0}"));
?>

The above example will output:

bool(false)
bool(true)
bool(true)
bool(true)
bool(false)