Preg_正确替换多个bbcode

发布于 2024-11-30 05:07:56 字数 1123 浏览 1 评论 0原文

目前，我正在创建一个 bbCodes 函数，以将所有 bbCodes 替换为文本中相应的 HTML 代码。我的代码像这样工作 atm：

public function bbCodes($text) {

    global $bb_codes;

    $text = preg_replace(array_keys($bb_codes), array_values($bb_codes), $text);

    return $text;

}

其中 $bb_codes 看起来像这样：

$bb_codes = array(
            "/\[b\](.*)\[\/b\]/is" => "<b>$1</b>",
            "/\[u\](.*)\[\/u\]/" => "<u>$1</u>",
            "/\[i\](.*)\[\/u\]/" => "<i>$1</i>",
            "/\[d\](.*)\[\/d\]/" => "<del>$1</del>",
            "/\[url=(.*)\](.*)\[\/url\]/" => "<a href='$1'>$2</a>"
              );

当每个 bbcode 仅使用一次时它就可以工作，例如：

[b]this text is bold[/b]
[i]this text is italic[/i]
etc..

但是一旦我多次使用一个 bbcode 标签，它就会变得混乱：

   [b]this text is bold[/b]
   [i]this text is italic[/i]
   [b]this text is bold too[/b]

它会看到第一个 [b]标签并查找另一个 [/b] 标签，但它会采用最后一个标签，而不是遇到的第一个标签（在上面的示例中，所有文本都将变为粗体，第一个 [b] 和最后一个 [/b] 将仅被替换）。有谁知道我做错了什么以及如何解决这个问题？

提前致谢！

干杯。

原文

Currenlty I'm creating a bbCodes function to replace all bbCodes by their corresponding HTML codes within a text. My code works like this atm:

public function bbCodes($text) {

    global $bb_codes;

    $text = preg_replace(array_keys($bb_codes), array_values($bb_codes), $text);

    return $text;

}

where $bb_codes looks like this:

$bb_codes = array(
            "/\[b\](.*)\[\/b\]/is" => "<b>$1</b>",
            "/\[u\](.*)\[\/u\]/" => "<u>$1</u>",
            "/\[i\](.*)\[\/u\]/" => "<i>$1</i>",
            "/\[d\](.*)\[\/d\]/" => "<del>$1</del>",
            "/\[url=(.*)\](.*)\[\/url\]/" => "<a href='$1'>$2</a>"
              );

It's working when each bbcode is only used once, e.g.:

[b]this text is bold[/b]
[i]this text is italic[/i]
etc..

But as soon as I use one bbcode tag multiple times it gets messed up:

   [b]this text is bold[/b]
   [i]this text is italic[/i]
   [b]this text is bold too[/b]

It will see the first [b] tag and look for another [/b] tag but it takes the last one instead of the first one it encounters (in the above example all the text will be bold and the first [b] and last [/b] will be replaced only). Does anyone know what I've done wrong and how I can fix this?

Thanks in advanced!

Cheers.

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风追烟花雨 2024-12-07 05:07:56

你需要使用非贪婪通配符，而不是把所有.*都写成.*?。

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谜泪 2024-12-07 05:07:56

为什么你不使用 BBCode Parser ？
查看 NBBC 解析器。

要安装它，只需将其放入服务器上的有用文件夹中，然后像我稍后提供的链接中所写的那样连接它:)

<?php
    require_once("nbbc.php");
    $bbcode = new BBCode;
    print $bbcode->Parse("[i]Hello, World![/i]  This is the magic of [b]BBCode[/b]!");
?>

Why you're not using BBCode Parser ?
Look at NBBC Parser.

To install it just put it into usefull folder on your server and connect it like it written in link I've provided later : )

<?php
    require_once("nbbc.php");
    $bbcode = new BBCode;
    print $bbcode->Parse("[i]Hello, World![/i]  This is the magic of [b]BBCode[/b]!");
?>

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