用数组解析 bbcode

Question

以下问题： 上面“列表”中的“li”标签设置不正确，然后它就是。 我试图改变表达，但我还没有找到解决办法。

这是我的（缩短的）代码（以及所有其他遵循相同原理图的“bb”）

function bb($content) {
$search = array (
'#\[list\](.+)\[\/list\]#iUs',
'#\[list=1\](.+)\[\/list\]#iUs',
'#\[\*\](.*)\[/\*\]#iUs',
'#\[IMG\](.+)\[\/IMG\]#iUs'
);
$replace = array (
'<ul>$1</ul>',
'<ol>$1</ol>',
'<li>$1</li>',
'<img src="$1"/>' 
);
$newtext = preg_replace($search, $replace, $content);
$newtext = nl2br($newtext);
$newtext = preg_replace('#<br />(\s*<br />)+#', '<br />', $newtext);
return $newtext;
}
print autolink(bb($NewsItemContent)); // http/s autolinking (later I'll add link preview)

内容将如下所示：

 [h1]MAIN FEATURES[/h1] [list] [*]Doubles https://steamcommunity.com/games/227300/announcements/detail/1294067099912833659 [*]Background screen options [*]Changed light flares on the player and AI vehicles https://steamcommunity.com/games/227300/announcements/detail/1335730452506903011 [/list] [h1]MINOR CHANGES[/h1] [list][*]Auxiliary brakes system support (engine brake and retarder in one control element)[/*][*]Fixed licence plate change in states/countries where no city formats exist[/*][*]Fixed brake vs parking brake behavior[/*][*]Fixed tire noise of silent tires[/*][*]Retarder improvement (better cruise control behavior, no braking with throttle, icon when moving only)[/*][*]Steam Inventory support to allow for distributing rewards from upcoming World of Trucks events[/*][/list] If you wish to participate in the open beta, you can find this version in the public_beta branch on Steam. The way to access it is as follows: Steam client → LIBRARY → right click on Euro Truck Simulator 2 → Properties → Betas tab → public_beta → 1.28 public beta. No password required. During open betas, there is a dedicated beta site for World of Trucks, which is used to safely test all new features.

我希望有人可以帮助我， 干杯'

Answer 1

有几种不同语法的 bbcode 风格。显然最好的办法是有一个明确的规则并且只处理一种语法，但是对于您的具体问题，您可以将您的模式更改为这样的：

#\[\*]([^[]*(?:\[(?!/?\*]|/list])[^[]*)*)(?:\[/\*])?#i

demo

请注意，您还需要将 [*] 替换放在 [list]s 替换之前。

这个想法是描述所有不是[*]、[/*] 或[/list]，并在末尾添加一个可选的结束标记。

详情：

\[\*]   # opening tag
 (    # capture group 1
     [^[]* # all that isn't an opening square bracket
     (?:
        \[ (?!/?\*]|/list]) # opening bracket not followed by *] or /*] or /list]
         [^[]*
     )*
 )
 (?:\[/\*])?    # the optional closing tag