HTML解析-将文本转换为链接

假设我有这样的文本:

亚伦与他哥哥在米利巴的罪有牵连(Num。20:8-13)，因此不被允许进入应许之地。众支派到了以东地边的何珥山，摩西照神的吩咐，在众百姓眼前领亚伦和他儿子以利亚撒上那山。他在那里把亚伦的圣衣脱下来，给以利亚撒穿上。亚伦死在山顶上，年一百二十三岁。20:23-29 。Comp。。6 ; 32:50 )

我想做的是，将上面的每个粗体文本转换为一个链接，如果它是:

• Num。20:8-12，应该是这样:<> Num a href = " num20.8-12"。20:8-13
• 。6;32:50，应该是:。10:6 & lt;a href = " deut32.50 ">。32:50

正文结构如下:

<DIV>
  <B>Aaron</B>
  <SPAN>
    Aaron was implicated in the sin of his brother at Meribah (Num. 20:8-13), and on that account was not permitted to enter the Promised Land. When the tribes arrived at Mount Hor, "in the edge of the land of Edom," at the command of God Moses led Aaron and his son Eleazar to the top of that mountain, in the sight of all the people. There he stripped Aaron of his priestly vestments, and put them upon Eleazar; and there Aaron died on the top of the mount, being 123 years old (Num. 20:23-29. Comp. Deut. 10:6; 32:50)
  </SPAN>
</DIV>

任何好的想法都会受到赞赏。谢谢:)

编辑

代码:

$chapters = array ("Deut", "Num");
$html = file_get_html($link);
foreach($html->find('div') as $dict) {
    $descr  = $dict->find('SPAN', 0)->innertext;    
    $descrl = preg_replace("/$chapters'. [0-9:-]*/", "<a href='"$0'">$0</a>", $descr); //--> See description below
    echo $descrl . "<hr/>";
}

描述:当我将$chapters更改为单个单词如Num或Deut时，它工作得很好，但是当我将其更改为$chapters时，它不返回任何链接。