问删除bbcode值aftar“]中的空格，然后使用"[”

EN

// input -------------------
$OLDtext = "[youtube]       IHu9-Q30Nuw     [/youtube] 
texttexttext


texttext

[code]               codecodecode  codecode codecodecode
codecodecode



codecodecode
[/code] 
";

// code -------------------
$NEWtext = preg_replace_callback("/\[(.*?)\](.*?)\[\/(.*?)\]/ism"
                                , 
                                function($match) 
                                {
                                    $TEMPtext   = preg_replace('/\]\s+/', ']', $match[0]); 
                                    return preg_replace('/\s+(\[+)/', '$1', $TEMPtext);
                                }
                                , 
                                $OLDtext
                            );
// print -------------------
echo nl2br($NEWtext);

[youtube]IHu9-Q30Nuw[/youtube] 
texttexttext


texttext

[code]codecodecode  codecode codecodecode
codecodecode



codecodecode[/code]