[FIX] BBCode Korunmasızlığı - ciddi (2.0.6)

   $bbcode_tpl['url4'] = str_replace('{URL}', 'http://\\1', $bbcode_tpl['url']);
   $bbcode_tpl['url4'] = str_replace('{DESCRIPTION}', '\\5', $bbcode_tpl['url4']);

   $bbcode_tpl['url4'] = str_replace('{URL}', 'http://\\1', $bbcode_tpl['url']);
   $bbcode_tpl['url4'] = str_replace('{DESCRIPTION}', '\\3', $bbcode_tpl['url4']);

// matches a [url]xxxx://www.phpbb.com[/url] code..
   $patterns[] = "#\[url\]([\w]+?://.*?[^ \"\n\r\t<]*?)\[/url\]#is";
   $replacements[] = $bbcode_tpl['url1'];

   // [url]www.phpbb.com[/url] code.. (no xxxx:// prefix).
   $patterns[] = "#\[url\]((www|ftp)\.([\w\-]+\.)*?[\w\-]+\.[a-z]{2,4}(:?[0-9]*?/[^ \"\n\r\t<]*)?)\[/url\]#is";
   $replacements[] = $bbcode_tpl['url2'];

   // [url=xxxx://www.phpbb.com]phpBB[/url] code..
   $patterns[] = "#\[url=([\w]+?://.*?[^ \"\n\r\t<]*?)\](.*?)\[/url\]#is";
   $replacements[] = $bbcode_tpl['url3'];

   // [url=www.phpbb.com]phpBB[/url] code.. (no xxxx:// prefix).
   $patterns[] = "#\[url=((www|ftp)\.([\w\-]+\.)*?[\w\-]+\.[a-z]{2,4}(:?[0-9]*?/[^ \"\n\r\t<]*)?)\](.*?)\[/url\]#is";
   $replacements[] = $bbcode_tpl['url4'];

// matches a [url]xxxx://www.phpbb.com[/url] code..
   $patterns[] = "#\[url\]([\w]+?://[^ \"\n\r\t<]*?)\[/url\]#is";
   $replacements[] = $bbcode_tpl['url1'];

   // [url]www.phpbb.com[/url] code.. (no xxxx:// prefix).
   $patterns[] = "#\[url\]((www|ftp)\.[^ \"\n\r\t<]*?)\[/url\]#is";
   $replacements[] = $bbcode_tpl['url2'];

   // [url=xxxx://www.phpbb.com]phpBB[/url] code..
   $patterns[] = "#\[url=([\w]+?://[^ \"\n\r\t<]*?)\](.*?)\[/url\]#is";
   $replacements[] = $bbcode_tpl['url3'];

   // [url=www.phpbb.com]phpBB[/url] code.. (no xxxx:// prefix).
   $patterns[] = "#\[url=((www|ftp)\.[^ \"\n\r\t<]*?)\](.*?)\[/url\]#is";
   $replacements[] = $bbcode_tpl['url4'];

// matches an "xxxx://yyyy" URL at the start of a line, or after a space.
   // xxxx can only be alpha characters.
   // yyyy is anything up to the first space, newline, comma, double quote or <
   $ret = preg_replace("#(^|[\n ])([\w]+?://.*?[^ \"\n\r\t<]*)#is", "\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $ret);

   // matches a "www|ftp.xxxx.yyyy[/zzzz]" kinda lazy URL thing
   // Must contain at least 2 dots. xxxx contains either alphanum, or "-"
   // zzzz is optional.. will contain everything up to the first space, newline,
   // comma, double quote or <.
   $ret = preg_replace("#(^|[\n ])((www|ftp)\.[\w\-]+\.[\w\-.\~]+(?:/[^ \"\t\n\r<]*)?)#is", "\\1<a href=\"http://\\2\" target=\"_blank\">\\2</a>", $ret);

//matches an "xxxx://yyyy" URL at the start of a line, or after a space.
   // xxxx can only be alpha characters.
   // yyyy is anything up to the first space, newline, comma, double quote or <
   $ret = preg_replace("#(^|[\n ])([\w]+?://[^ \"\n\r\t<]*)#is", "\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $ret);

   // matches a "www|ftp.xxxx.yyyy[/zzzz]" kinda lazy URL thing
   // Must contain at least 2 dots. xxxx contains either alphanum, or "-"
   // zzzz is optional.. will contain everything up to the first space, newline,
   // comma, double quote or <.
   $ret = preg_replace("#(^|[\n ])((www|ftp)\.[^ \"\t\n\r<]*)#is", "\\1<a href=\"http://\\2\" target=\"_blank\">\\2</a>", $ret);