获取PHP中所有UTF-8空格字符完整列表的最简单方法

Question

在PHP中，获取以utf8编码的所有Unicode whitespace characters的完整列表(字符串数组)最好的方法是什么？

我需要它来生成测试数据。

Answer 1

This email (archived here)包含以UTF8、UTF16和HTML编码的所有Unicode空格字符的列表。

在存档链接中查找'utf8_whitespace_table‘函数。

static $whitespace = array(
    "SPACE" => "\x20",
    "NO-BREAK SPACE" => "\xc2\xa0",
    "OGHAM SPACE MARK" => "\xe1\x9a\x80",
    "EN QUAD" => "\xe2\x80\x80",
    "EM QUAD" => "\xe2\x80\x81",
    "EN SPACE" => "\xe2\x80\x82",
    "EM SPACE" => "\xe2\x80\x83",
    "THREE-PER-EM SPACE" => "\xe2\x80\x84",
    "FOUR-PER-EM SPACE" => "\xe2\x80\x85",
    "SIX-PER-EM SPACE" => "\xe2\x80\x86",
    "FIGURE SPACE" => "\xe2\x80\x87",
    "PUNCTUATION SPACE" => "\xe2\x80\x88",
    "THIN SPACE" => "\xe2\x80\x89",
    "HAIR SPACE" => "\xe2\x80\x8a",
    "ZERO WIDTH SPACE" => "\xe2\x80\x8b",
    "NARROW NO-BREAK SPACE" => "\xe2\x80\xaf",
    "MEDIUM MATHEMATICAL SPACE" => "\xe2\x81\x9f",
    "IDEOGRAPHIC SPACE" => "\xe3\x80\x80",
);

Answer 2

几年后，这个问题在搜索unicode空格字符时在Google上仍然有最高的结果。devio的答案很好，但并不完整。在撰写本文时(2017年10月)，维基百科有一个空白字符列表：https://en.wikipedia.org/wiki/Whitespace_character

此列表指定了25个代码点，而当前接受的答案列表为18个。包括其他7个代码点，列表为：

U+0009  character tabulation
U+000A  line feed
U+000B  line tabulation
U+000C  form feed
U+000D  carriage return
U+0020  space
U+0085  next line
U+00A0  no-break space
U+1680  ogham space mark
U+180E  mongolian vowel separator
U+2000  en quad
U+2001  em quad
U+2002  en space
U+2003  em space
U+2004  three-per-em space
U+2005  four-per-em space
U+2006  six-per-em space
U+2007  figure space
U+2008  punctuation space
U+2009  thin space
U+200A  hair space
U+200B  zero width space
U+200C  zero width non-joiner
U+200D  zero width joiner
U+2028  line separator
U+2029  paragraph separator
U+202F  narrow no-break space
U+205F  medium mathematical space
U+2060  word joiner
U+3000  ideographic space
U+FEFF  zero width non-breaking space

Answer 3

http://en.wikipedia.org/wiki/Space_%28punctuation%29#Spaces_in_Unicode

不幸的是，它没有提供UTF-8，但它确实有网页中的字符，所以你可以剪切并粘贴到你的编辑器中(如果它保存为UTF-8)。或者，http://www.fileformat.info/info/unicode/char/180E/index.htm提供UTF-8 (将"180E“替换为您正在查找的十六进制UTF-16值)。

这也给@devio的优秀答案遗漏了几个额外的字符。