I'd like to have a regex to match a word, even if there are spaces between the characters. When I want to match the word test, it should match the following:
即使字符之间有空格，我也希望有一个正则表达式匹配一个单词。当我想匹配单词test时，它应匹配以下内容：
test t est t e s t
测试结果
And so on, but it should not match things like this:
等等，但不应该匹配这样的事情：
tste te ts s tet
t t te t s tet
I have this regex: (t[\s]*e[\s]*s[\s]*t[\s]*) But I don't believe that this one is very efficient.
我有这个正则表达式：（t [\ s] * e [\ s] * s [\ s] * t [\ s] *）但我不相信这个非常有效。
2 个解决方案
#1
1
Actually, it is the same as t\s*e\s*s\s*t (if the word appears inside a larger string, \bt\s*e\s*s\s*t\b is preferable). This is the only way to match such words. You have to consume these spaces, otherwise you won't have a match.
实际上，它与t \ s * e \ s * s \ s * t相同（如果单词出现在较大的字符串中，则优选\ bt \ s * e \ s * s \ s * t \ b）。这是匹配这些单词的唯一方法。您必须消耗这些空格，否则您将无法匹配。
#2
1
Why not remove all horizontal spaces from input and then match regex:
为什么不从输入中删除所有水平空格然后匹配正则表达式：
$input = 't e s t';
$regex = '/\btest\b/i';
preg_match($regex, preg_replace('/\h+/', '', $input), $m);
#1
1
Actually, it is the same as t\s*e\s*s\s*t (if the word appears inside a larger string, \bt\s*e\s*s\s*t\b is preferable). This is the only way to match such words. You have to consume these spaces, otherwise you won't have a match.
实际上，它与t \ s * e \ s * s \ s * t相同（如果单词出现在较大的字符串中，则优选\ bt \ s * e \ s * s \ s * t \ b）。这是匹配这些单词的唯一方法。您必须消耗这些空格，否则您将无法匹配。
#2
1
Why not remove all horizontal spaces from input and then match regex:
为什么不从输入中删除所有水平空格然后匹配正则表达式：
$input = 't e s t';
$regex = '/\btest\b/i';
preg_match($regex, preg_replace('/\h+/', '', $input), $m);