Php/docs/intlchar.iswhitespace

• PHP Manual
• IntlChar
• Check if code point is a whitespace character according to ICU

IntlChar::isWhitespace

(PHP 7)

IntlChar::isWhitespace — Check if code point is a whitespace character according to ICU

说明

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

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.

参数

codepoint

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

返回值

Returns true if codepoint is a whitespace character according to ICU, false if not.

范例

Example #1 Testing different code points

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

以上例程会输出：

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

参见

• IntlChar::isspace() - Check if code point is a space character
• IntlChar::isJavaSpaceChar() - Check if code point is a space character according to Java
• IntlChar::isUWhiteSpace() - Check if code point has the White_Space Unicode property