PHP 简码正则表达式问题

PHP Shortcode Regex issue

嗨,所以我需要帮助来获取 html 的一个块,其中包含一个旧的任意系统的现有短代码。使用下面的代码并使用 PHP 更改如下:

[CDC](http://www.cdc.gov/)

会变成这样:

<a href="http://cdc.gov">CDC</a> 

关于如何实现此目标的任何想法?一个代码块中也可能有多个实例。如果有人可以提供帮助,我将不胜感激 - 谢谢!!

使用具有特定正则表达式模式的 preg_replace 函数的解决方案:

$block = "Two excellent websites outlining the major precautions are: [some text](www.cdc.gov) and [who's next](www.who.int) which are the official sites ...";

$block = preg_replace("/\[([^]]+)\]\(([^)]+)\)/", '<a href=""></a>', $block);

print_r($block);

输出(来自源代码):

Two excellent websites outlining the major precautions are: <a href="www.cdc.gov">some text</a> and <a href="www.who.int">who's next</a> which are the official sites ...

这应该可行:

PHP:

<?php 
$re = '/(?<=\[)[^]]+(?=\])|(?<=\()[^]]+(?=\))/m';
$str = '[CDC](http://www.cdc.gov/)';

preg_match_all($re, $str, $matches);

// Print the entire match result
//print_r($matches); //Print result
$url = $matches[0][1]; //http://www.cdc.gov/
$text_url = $matches[0][0]; //CDC
echo "<a href=".$url.">$text_url</a>"
 ?>

结果:

<a href=http://www.cdc.gov/>CDC</a>

尽情享受吧。