php - 如果任何单词的起始字符和结束字符都是？，那么两者都是？应该在 PHP 中删除

Question

我想在我的 PHP 代码中删除我段落中的几个问号。

例如:

$str = " Hi ?How? are you? Hope you are good. ";

输出应该是:

$str = " Hi How are you? Hope you are good. ";

因此段落中具有开始和结束字符“？”的单词(问号)，那么两个问号都要去掉。请建议。请提出实现这一目标的最佳方法。

Answer 1

试试这个:

$str = " Hi ?How? are you? Hope you are good. ";

$newstr = preg_replace('/\?([a-z0-9]{1,}?)\?/si','$1',$str);
echo $newstr;