替換字符串中括號中任何括號的所有出現

Question

我通常都很高效地解決PHP問題，但是由於這個特定的問題，我似乎無法找到工作解決方案。

我有一個由標準文本組成的字符串，在文本中會有一些關鍵字被[方括號]包圍，我想將它轉換爲鏈接，但它不是一個簡單的比較字符串的情況預定義的「已知」關鍵字數組並進行簡單的替換，因爲[方括號]的內容可以是任何內容。

比如我就如下：

John Roberts is a jazz musician from Florida born in 1934. Some of his notable works include [A Gray Sky] and [Sophomore Effort]. 

應該變成如下：

John Roberts is a jazz musician from Florida born in 1934. Some of his notable works include <a href="search.php?search=a+gray+sky">A Gray Sky</a> and <a href="search.php?search=sophomore+effort">Sophomore Effort</a>. 

應當注意的是：

• 的$字符串將包含未知數量的[方括號詞]。
• 使用方括號不是必需的，如果它會導致問題，但現在看來我最方便的方法。

我並不是要求別人給我代碼，我需要的是有人告訴我應該調查什麼樣的PHP函數，並指向正確的方向！

非常感謝大家，謝謝Stackoverflow讓我有機會問！

Answer 1

$string = "John Roberts is a jazz musician from Florida born in 1934. Some of his notable works include [A Gray Sky] and [Sophomore Effort]."; 

function rep_callback($match) 
{ 
     $query = substr($match[0],1,-1); 
     $query = urlencode($query); 
     $link = '<a href="search.php?search='.$query.'">'.$match[0].'</a>'; 
     return $link; 
} 

echo $string."\n"; 
echo preg_replace_callback("/\[.+\]/U", "rep_callback", $string)."\n"; 

輸出：

John Roberts is a jazz musician from Florida born in 1934. Some of his notable works include [A Gray Sky] and [Sophomore Effort]. 
John Roberts is a jazz musician from Florida born in 1934. Some of his notable works include <a href="search.php?search=A+Gray+Sky">[A Gray Sky]</a> and <a href="search.php?search=Sophomore+Effort">[Sophomore Effort]</a>.