Question

The question is extremely easy, but the solution might not.

Let’s say this is my text input inside a variable called $description:

<p>
text text text
text text text
</p>
<ul>
text text
text text
text text
</ul>
<p>
text text text
text text text
</p>

I believe it’s already obvious what I need to do. I need to locate all <ul></ul> tags inside my string and add <li></li> tags for each entry inside, under these conditions:

• I don’t know how many <ul></ul> tags there might be in total, the function should find all of them
• All list-entries inside each <ul></ul> WILL be separated by enter (\r\n)

Any ideas?

Answer 1

This will do the job:

  function addLI ($in) {
     $in = str_replace("\r\n", "\n", $in);
     $lines = explode("\n", $in);
     $out = "";
     $ul = false;
     foreach($lines as $line) {
        if ($ul == false) {
           if (stripos($line, "<ul>") !== false) {
              $ul = true;
           }
        }
        else {
           if (stripos($line, "</ul>") !== false) {
              $ul = false;
           }
           else {
              $line = "<li>" . $line . "</li>";
           }
        }
        $out .= $line . "\n";
     }
     return $out;
  }

Edit: first edition worked only with “\n” – now it works with “\n” and “\r\n”