Scraping and DOing Some Math on Result

[bschultz]

I'm trying to scrape a page, and replace a given string with a link to an mp3.  The format of the page is always as such:

 

<td>0-1</td> 
<td>0-2</td> 
<td>1-2</td> 
<td>1-3</td> 

I need it to return like this:  this will always be the first number + the second number...while removing the dash.

 

<td><a href='1.mp3'>1</a></td>
<td><a href='2.mp3'>2</a></td>
<td><a href='3.mp3'>3</a></td>
<td><a href='4.mp3'>4</a></td>

Is there a way to combine the regex (which as many times as I've tried, I can't wrap my around) of the matching of the numbers inside the <td> tags with the explode of the dash and the math into one piece of code? 

Edited December 27, 2022 by bschultz

[requinix]

Don't use regular expressions to parse HTML. Use something like DOMDocument to load the markup and navigate to the table cells you want to read.