preg_replace_callbackとの一致を取得

Question

斜体の括弧内に書かれたテキストを除いて、テキスト文字列全体を大文字に変換したい。

また、大括弧を削除する必要があります。

私は、次のコードを作ってきたが、それは逆のことを行います

$text='this PART should be CONVERTED to uppercase [This PART should not BE changed] this part should also be CONVERTED to uppercase [THIS part should also not be CHANGED] etc..';  

    $text = preg_replace_callback(
     "(\[(.*?)\])is", 
     function($m) { 

      return strtoupper($m[1]); 
     }, 
     $text); 
    echo $text; 

Answer 1

あなたはそれらのマッチをスキップするPCRE動詞SKIPとFAILを使用することができます。これらの詳細については、http://www.rexegg.com/regex-best-trick.htmlをご覧ください。

$text='this PART should be CONVERTED to uppercase [This PART should not BE changed] this part should also be CONVERTED to uppercase [THIS part should also not be CHANGED] etc..';  
$text = preg_replace_callback(
     "/\[(.*?)\](*SKIP)(*FAIL)|\w+/is", 
     function($m) { 
      return strtoupper($m[0]); 
     }, 
     $text); 
echo $text; 

正規表現デモ：https://regex101.com/r/nwG2wW/4/
PHPデモ： `のvar_dump（$ m）を使用して` $ m`にあるものhttps://3v4l.org/rkFUGd

Answer 2

[^][]++(?=\[|$)

Match a single character not present in the list below [^][]++ 
++ Quantifier — Matches between one and unlimited times, as many times as possible, without giving back (possessive) 
][ matches a single character in the list ][ (case sensitive) 
Positive Lookahead (?=\[|$) 
Assert that the Regex below matches 
1st Alternative \[ 
\[ matches the character [ literally (case sensitive) 
2nd Alternative $ 
$ asserts position at the end of the string, or before the line terminator right at the end of the string (if any)