识别并获取PHP字符串中的大写单词

问题描述

在句子或字符串上是否有获取CAPS单词的功能或方法?示例:$str = "ABOUT US who we are"我如何识别并获取大写的单词"ABOUT US"并将其分隔为小写字母的单词"who we are"?这样输出将是$str1 = "ABOUT US"和$str2 = "who we are" ...谢谢！

Is there a function or way on how to get the CAPS words on a sentence or string?Example: $str = "ABOUT US who we are"how am i able to identify and get the capitalized words "ABOUT US"and separate it to small letter words "who we are"? So that the output would be $str1 = "ABOUT US" and $str2 = "who we are"... thanks!

推荐答案

您可以为其使用正则表达式:

You can use a regular expression for it:

preg_match_all('/\b([A-Z]+)\b/', $str, $matches);

要匹配小写字母，请使用以下命令:

To match the lowercase words, use this:

preg_match_all('/\b([a-z]+)\b/', $str, $matches2);

然后，您可以使用implode()之类的功能来构建字符串.

Then you can use functions such as implode() to build the strings.

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