# IntlChar::isspace

(PHP 7, PHP 8)

IntlChar::isspace — Check if code point is a space character

### 说明

public static IntlChar::isspace(int|string `$codepoint`): ?bool

Determines if the specified character is a space character or not.

### 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 space character, `false` if not. Returns `null` on failure.

### 示例

示例 #1 Testing different code points

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

以上示例会输出：

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

### 参见

- IntlChar::isJavaSpaceChar() - Check if code point is a space character according to Java
- IntlChar::isWhitespace() - Check if code point is a whitespace character according to ICU
- IntlChar::isUWhiteSpace() - Check if code point has the White_Space Unicode property
- ctype_space() - 检测空白字符

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