Php regexp在句点后添加空格，但在句点表示十进制或字母缩写时不添加空格？

以一种简单的方式使用php regexp，是否可以修改字符串以在单词后面的句点之后添加空格，而不是在前面和后面都是数字（如1.00）的句点之后添加空格？我还需要它忽略单字母缩写，例如N.Y

String.Looks like this.With an amount of 1.00 and references N.Y.

需要更改为

String. Looks like this. With an amount of 1.00 and references N.Y.

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这应该允许字符串中有多个实例。当然…

您可以使用此正则表达式：

$text = preg_replace('/(\.)([[:alpha:]]{2,})/', '$1 $2', $text);

/((?<=[A-Za-z0-9])\.(?=[A-Za-z]{2})|(?<=[A-Za-z]{2})\.(?=[A-Za-z0-9]))/

输出：

"String. Looks like this. With an amount of 1.00 and references N.Y. Mr. NoOne. 30% replaced. no 50. Don't know."

"String. Looks like this. With an amount of 1.00 and references N.Y. Mr. NoOne. 30% replaced. no 50. Don't know."