php regex:删除双倍以上的空格 [英] php regex: removing more than double space

问题描述

$tags = preg_replace('/\s\s+/',' ', $tags);

这将删除不止一个空格?

that will remove more than just one space ?

我需要删除超过两倍的空格.

i need to remove anything more than double space.

推荐答案

我认为超过两倍的空格"是指 3 个或更多的空格:

I'm taking "more than double space" to mean 3 or more spaces:

$tags = preg_replace('/\s{3,}/',' ', $tags);

这将用一个空格替换 3 个或更多连续出现的任何空白字符.

This will replace 3 or more contiguous occurrences of any whitespace character with a single space.

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