使用PHP正则表达式匹配字符串中的任何Unicode空格字符 [英] Matching any Unicode whitespace characters in a string with PHP regex

问题描述

我想在每个空格处将文本消息拆分为数组.直到我收到此短信，一切都很好. 以下是处理文本字符串的几行代码:

I want to split text message into array at every Space. It's been working just fine until I received this text message. Here is the few code lines that process the text string:

    $str = 'T bw4  05/09/19 07:51 am BW6N 499.803';
    $cleanStr = iconv("UTF-8", "ISO-8859-1", $str);
    $strArr = preg_split('/[\s\t]/', $cleanStr);
    var_dump($strArr);

Var_dump产生以下结果:

Var_dump yields this result:

array:6 [▼
 0 => "T"
 1 => b"bw4  05/09/19"
 2 => "07:51"
 3 => "am"
 4 => "BW6N"
 5 => "499.803"
]

数组"1 => b" bw4 05/09/19"中的#1项不正确，我无法弄清楚数组值前面的字母"b"是什么. 另外，"bw4"和"05/09/19"之间的空格 任何有关如何更好地实现字符串拆分的建议都将受到赞赏. 这是原始字符串: https://3v4l.org/2L35M ，这是我的搜索结果的图像本地主机: http://prntscr.com/jjbvny

The #1 item in the array "1 => b"bw4 05/09/19"" in not correct, I am not able figure out what is the letter "b" in front of the array value. Also, the space(es) between "bw4" and "05/09/19" Any suggestion on how better achieve the string splitting are greatly appreciated. Here is the original string: https://3v4l.org/2L35M and here is the image of result from my localhost: http://prntscr.com/jjbvny

推荐答案

要匹配您可以使用的任何1个或多个Unicode空白字符，

To match any 1 or more Unicode whitespace chars you may use

'~\s+~u'

您的'/[\s\t]/'模式仅匹配单个空格字符(\s)或制表符(\t)(这当然是多余的，因为\s也已匹配制表符)，但是由于u缺少修饰符，\s无法匹配您在bw4之后的 \ u00A0 字符(硬空格).

Your '/[\s\t]/' pattern only matches a single whitespace char (\s) or a tab (\t) (which is of course redundant as \s already matches tabs, too), but since the u modifier is missing, the \s cannot match the \u00A0 chars (hard spaces) you have after bw4.

所以，使用

$str = 'T bw4  05/09/19 07:51 am BW6N 499.803';
$strArr = preg_split('/\s+/u', $str);
print_r($strArr);

请参见 PHP演示产生

Array
(
    [0] => T
    [1] => bw4
    [2] => 05/09/19
    [3] => 07:51
    [4] => am
    [5] => BW6N
    [6] => 499.803
)

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