MyBB tables plugin

<?php

if (!defined('IN_MYBB')) die('This file should not be accessed directly');

$plugins -> add_hook('parse_message', 'tables_run');

function tables_info () {
  return array(
    'name'          => 'Table MyCode',
    'description'   => 'Allows using [table], [tr] and [td] for defining tables, and also validates proper tag nesting to avoid breaking the layout.',
    'author'        => 'aaaaaa123456789',
    'version'       => '1.00',
    'codename'      => 'tables',
    'compatibility' => '16*,18*'
  );
}

function tables_activate () {
  // do nothing
}

function tables_deactivate () {
  // do nothing
}

function tables_run ($contents) {
  return tables_parse_tags($contents, array('table', 'tr', 'td'));
}

function tables_parse_tags ($contents, $tags) {
  if (!count($tags)) return $contents;
  $tag = array_shift($tags);
  $result = '';
  $matches = null;
  $count = preg_match_all('{\[' . $tag . '(=[^\]<>\"]*)?\](.*?)\[/' . $tag . '\]}si', $contents, $matches, PREG_OFFSET_CAPTURE);
  if (!$count) return $contents;
  $last_offset = 0;
  foreach ($matches[0] as $match) {
    if ($last_offset != $match[1]) {
      $result .= substr($contents, $last_offset, $match[1] - $last_offset);
      $last_offset = $match[1];
    }
    $matched = $match[0];
    $style = tables_get_style_from_tag($matched);
    $innerHTML = tables_parse_tags(tables_get_content_from_tag($matched), $tags);
    $result .= "<$tag " . (($style != null) ? ('style="' . $style . '"') : '') . ">$innerHTML</$tag>";
    $last_offset += strlen($matched);
  }
  if ($last_offset < strlen($contents)) $result .= substr($contents, $last_offset);
  return $result;
}

function tables_get_style_from_tag ($data) {
  $bracket = strpos($data, ']');
  $equals = strpos(substr($data, 0, $bracket), '=');
  if ($equals === false) return null;
  return substr($data, $equals + 1, $bracket - $equals - 1);
}

function tables_get_content_from_tag ($data) {
  $closing_bracket = strpos($data, ']');
  $opening_bracket = strrpos($data, '[');
  return substr($data, $closing_bracket + 1, $opening_bracket - $closing_bracket - 1);
}

?>