删除多余的空格，但不要删除两个单词之间的空格

问题描述

我想删除字符串中多余的空格.我已经尝试过trim，ltrim，rtrim和其他命令，但是它们都不起作用，甚至尝试了以下内容.

I want to remove extra spaces present in my string. I have tried trim,ltrim,rtrim and others but non of them are working and even tried the below stuffs.

//This removes all the spaces even the space between the words
// which i want to be kept
$new_string = preg_replace('/\s/u', '', $old_string);

对此有什么解决方案吗?

Is there any solution for this ?

已更新:-

输入字符串:-

"
Hello Welcome
                             to India    "

输出字符串:-

"Hello Welcome to India"

推荐答案

$cleanStr = trim(preg_replace('/\s\s+/', ' ', str_replace("\n", " ", $str)));

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