How to replace multiple spaces in php

php替换多个空格的方法：首先创建一个PHP示例文件；然后定义一个“merge_spaces”方法；最后通过正则表达式“preg_replace("/\s(?=\s)/","\\1",$string);”去除多个空格并保留一个即可。

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php多空格只保留一个的方法

代码：

function merge_spaces($string){
return preg_replace("/\s(?=\s)/","\\1",$string);
}

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