仅用一个“ _”代替空格 [英] replacing spaces with just one "_"

问题描述

我正在尝试仅用一个下划线替换所有连续的空格；通过使用以下代码行，我可以轻松地用 _替换一个空格：

I'm trying to replace all of the consecutive spaces with just one underscore; I can easily replace one space with "_" by using the following line of code:

str_replace(" ", "_",$name);

Evan我可以通过以下代码行用 _替换一个空格：

Evan I can replace one spaces with "_" by following line of code:

str_replace("  ", "_",$name);

但是问题是我不知道要检查多少空格！

But the problem is I don't know how many blank spaces I have to check!

如果我的问题不清楚，请告诉我您需要进一步澄清。

If my question is not clear please let me know which part you need more clarification.

谢谢

推荐答案

可能是最干净，最易读的解决方案：

Probably the cleanest and most readable solution:

preg_replace('/[[:space:]]+/', '_', $name);

这将用单个下划线替换所有空格（无论多少）。

This will replace all spaces (no matter how many) with a single underscore.

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