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IntlChar::isWhitespace

(PHP 7, PHP 8)

IntlChar::isWhitespaceCheck if code point is a whitespace character according to ICU

说明

public static IntlChar::isWhitespace(int|string $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:

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. Returns null on failure.

范例

示例 #1 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}"));
?>

以上例程会输出:

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

参见

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