本文介绍了仅用一个“ _”代替空格的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
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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