Yes, I know I'm a PHP developer. But some problems are tougher than others, and I'd prefer to have help if someone's already solved this problem.

My problem:

Updating preg_replace (with the /e modifier) with preg_replace_callback.

http://stackoverflow.com/questions/15454220/replace-preg-replace-e-modifier-with-preg-replace-callback

My new server, as well as my local Linux server, both use a very recent version of PHP that is higher than v5.5. That means preg_replace with "/e" is deprecated -- I can't use it anymore.

Regarding the conversion that needs to be done, I understand SOME of it, maybe even MUCH of it, but I'm still having a problem with certain instances of this switchover.

I found this code, which is SUPPOSED to be a drop-in replacement for all existing cases, but it's not perfect I guess.

// for PHP 5.5.0 - Replacement of preg_replace and pattern modifier "e" with preg_replace_callback
function php55_callback($element)
{
   return str_replace(
      array(''$1$3'',''$2$4'',''$1'', ''$2'', '$1', '$2'),
      array('$matches[1].$matches[3]','$matches[2].$matches[4]','$matches[1]','$matches[2]','$matches[1]','$matches[2]'),
      $element);
}

//Separate patterns with "e" modifier and without
function php55_preg_replace($pattern, $replace, $text)
{
   //if not PHP 5.5.x no changes
   if(version_compare(PHP_VERSION, '5.5.0', '<'))
      return preg_replace($pattern, $replace, $text);

   if(!is_array($pattern)) {
      $pattern = array($pattern);
      $replace = array($replace);
   }
   $count = count($pattern);
   $pattern_normal = $replace_normal = array();
   for($i = 0; $i < $count ; $i++)
   {
      if(substr($pattern[$i],-1) == "e")
         $text = preg_replace_callback(substr($pattern[$i],0,-1), create_function('$matches','return '.php55_callback($replace[$i]).';'), $text);
      else
      {
         $pattern_normal[] = $pattern[$i];
         $replace_normal[] = $replace[$i];
      }
   }
   return preg_replace($pattern_normal, $replace_normal, $text);
}

Here is the code where the problem is:
(You'll have to "quote" my post and get the actual code out; I can't stop the board from formatting for smilies, formatting, etc. That's why a bunch of the code here has "strikethrough"...)

      if (($options & FORMAT_MBCODE) && $brackets) {
         $search = array(
            '~[(/)?([bi])]~i',
            '~~i',
            '~~i',
            '~[/[us]]~i',
            '~http://(h t t p|h t t p s|f t p) : / /(.+?)~ise',
            '~(.+?)~ise',
            '~([a-z0-9-_.]+@[a-z0-9-.]+.[a-z0-9-_.]+)?~i',
            '~+?)](.*?)~i',
            '~~ise',
            '~[youtube](h t t p|h t t p s|f t p) : / /(.*?)[/youtube]~ise',
            '~[(right|center)](.*?)[/1]~is',
            '~(.*?)~ise',
            '~(.*?)~ise',
            '~[php=([0-9]+?)](.*?)[/php]~ise',
            '~[color=([A-Za-z ]+?)](.*?)[/color]~is',
            '~[font=([A-Za-z ]+?)](.*?)[/font]~is',
            '~[size=([1-9]+?)](.*?)[/size]~is'
         );

         // <iframe width="432" height="243" src="https://www.youtube.com/embed/usHOxIkanHY?rel=0" frameborder="0" allowfullscreen></iframe>

         $replace = array(
            '<12>',
            '<span style='text-decoration:underline'>',
            '<span style='text-decoration:line-through'>',
            '</span>',
            ''<a href="' . str_replace(' ', '', '1://2') . '" onclick="window.open(this.href,'' . $this->sets['link_target'] . '');return false;">' . str_replace(' ', '', '1://2') . '[/url]'',
            ''<a href="' . str_replace(' ', '', '1://2') . '" onclick="window.open(this.href,'' . $this->sets['link_target'] . '');return false;">' . str_replace('"', '"', '3') . '[/url]'',
            '1',
            '2',
            ''<img src="' . str_replace(' ', '', '1://2') . '" width="500" alt="' . str_replace(' ', '', '1://2') . '" />'',
            ''<iframe src="' . str_replace(' ', '', '1://2') . '" width="500" height="315" alt="' . str_replace(' ', '', '1://2') . '" frameborder="0" allowfullscreen></iframe>'',
            '<div align="1">2</div>',
            '$this->format_code('1', 0)',
            '$this->format_code('1', 1)',
            '$this->format_code('2', 1, '1')',
            '<span style='color:1'>2</span>',
            '<span style='font-family:1'>2</span>',
            '<span style='font-size:1ex'>2</span>'
         );

         if ((substr_count($in, '

') + substr_count($in, '

Quote from: ')) == substr_count($in, '[/quote

')) {
            $search[] = '~

Quote from: (.+?)

~i';
            $search[] = '~

Quote

~i';
            $search[] = '~

~i';

            $replace[] = '<table style="width:90%; margin-left:5%; margin-right:5%;" border="0" cellpadding="3" cellspacing="0"><tr><td>1 ' . $this->lang->main_said . ':</td></tr><tr><td class="quote">';
            $replace[] = '<table style="width:90%; margin-left:5%; margin-right:5%;" border="0" cellpadding="3" cellspacing="0"><tr><td>' . $this->lang->main_quote . ':</td></tr><tr><td class="quote">';
            $replace[] = '</td></tr></table>';
         }

         $in = $this->php55_preg_replace($search, $replace, $in);

Here is a test of several tags used on CathInfo:

1. Blue text


2. Large Text


3. How about in a font.

4. How about bold?

5. Or Italic?

6. Or Underlined?


7. Or Struckout?

8. Or PHP

9. And here's a quote.

10. Here is a link to a site:
10. CNN

Youtube video:
[youtube]https://www.youtube.com/embed/-3cb7C_FbwA[/youtube]

Img tag:


Testing an attached image:

Does AlligatorDicax (CathInfo member) know how to develop it?

I haven't visited CathInfo in many days--maybe on the order of 2 weeks--so this is the first I'd seen of Matthew's inquiry.

I regret that the simplest answer I can offer to the inquiry-as-intended is "no".

That's to say, what you're doing, and the extent to which you're doing it, is beyond my experience.  What little PHP code I've written lately is via a PHP version that seems farther back than yours, developed on Windows PC, altho' it's hosted on a server running PHP 5.4 (last I looked).  No contact with version 5.5-or-later at all.  And no coding using call-backs, even tho' the WinHelp I have claims implementation waaay back in PHP &#62;=4.0.5 (I suppose they're involved in user-&-forum management via MySQL for MercuryBoard).

I've been delaying various 'to-do' projects because of a certain demand on my time that I assumed was imminent, which hasn't yet appeared.