preg_replace一个带有h5标签的特定字符串

Question

I want to do the following using preg_replace:

$text = "
Lorem ipsum dolor sit amet
***consectetuer adipiscing elit
Aenean commodo ligula eget dolor
Aenean massa
"

$regex = "#('\***')(.*?)
#";
$text = preg_replace($regex1,"<h5>$2</h5>", $text);

And than the output:

Lorem ipsum dolor sit amet
<h5>consectetuer adipiscing elit</h5>
Aenean commodo ligula eget dolor
Aenean massa

So replace the three * with an opening H5 and than the first line break after the three * replace with the closing H5.

I tried many regex patterns, but with no success. As I'm not familiar with this I hope someone can help me?

Answer 1

Your regex was on the right track.

• The single quotes are uneeded:

  $regex = "#('\***')(.*?)
  #";
              ↑    ↑
  

• And each literal * needs escaping:

  $regex = "#(\*\*\*)(.*?)
  #";
  

I would also match the right in the second capture group, or use \R for any linebreak. Or perhaps even the #m flag and just the line end $ anchor.