獲取和替換包含？的字符串中的單詞 在字符串php正則表達式中的單詞之間

Question

我如何使用php regex實現以下目的：

我有一個包含以下內容的字符串：

$ a =“ Foo喜歡Bar嗎？我不這樣認為，Foo不。好嗎？”；

我想得到輸出：

Foo喜歡酒吧嗎？ 我不這么認為，富不。 好的？

與所有？ 中間的文本用單引號（'）代替。

我已經嘗試了以下代碼，但是可以嗎？ 也將被Okay代替：

<?php

$str = "This is Agbeniga , he is a very good boy. He?s loved , but is he really is ? No , i don?t think so. but it?s working very good anyway , ya?ll all darling. Okay?";

$str = str_replace("?","0",$str);
//replace all question marks with zero

$divide=explode(" ",$str);
$str="";
foreach($divide as $div)
{
    if(substr($div,0,1)===0)
    {
        $div=preg_replace("/0/", "?",$div);
    }
    $str .= ' ';
    $str.=$div;
}
//split by spaces and replace words that have zero at the end with question mark

$str= preg_replace('/\b(?<!-)\d+(?!-)\b/',"?",$str);
//replace all stand alone zeros with question mark

$str = str_replace("0","'",$str);
//then replace the remaining zeros with single quote

echo  $str;
?>

Answer 1

正則表達式可以檢查是否在問號的兩邊都放置了單詞邊界（“ \\ b”）

$str = "This is Agbeniga , he is a very good boy. He?s loved , but is he really is ? No , i don?t think so. but it?s working very good anyway , ya?ll all darling. Okay?";
$str= preg_replace('/\b\?\b/',"'",$str);
echo  $str;

演示