My default hook_preprocess_field() and field.tpl.php

field.tpl.php

<?php

/**
 * Implements template_preprocess_field().
 */
function THEME_preprocess_field(&$vars) {
  // If the view mode is "full" use <h2> for the field labels. Otherwise,
  // assume a teaser or more compact view mode is being displayed, and use <h3>.
  $vars['heading'] = ($vars['element']['#view_mode'] == 'full') ? 'h2' : 'h3';

  // Add a less verbose field name class: .field-NAME
  $vars['classes_array'][] = drupal_html_class($vars['element']['#field_name']);

  // Use .field-body instead of .body
  if ($vars['element']['#field_name'] == 'body') {
    $vars['classes_array'][] = 'field-body';
  }

  // Remove some classes from the wrapper <div>.
  $classes_to_remove = array(
    'field',
    'field-label-' . drupal_html_class($vars['element']['#label_display']),
    'field-type-' . drupal_html_class($vars['element']['#field_type']),
    'field-name-' . drupal_html_class($vars['element']['#field_name']),
    'body',
    'clearfix',
  );
  $vars['classes_array'] = array_diff($vars['classes_array'], $classes_to_remove);
}

?>


<?php
/**
 * Customizations:
 *  - When there are more than one values for a field, output the items
 *    in an unordered list.
 *  - $heading: When view mode is 'full' it's <h2>, otherwise, it's <h3>.
 *  - $classes: was modified to remove some classes in template.php.
 *
 * @see template_preprocess_field()
 * @see THEME_preprocess_field()
 *
 */
$count = count($items);
?>
<?php if (!empty($items)): ?>
  <div class="<?php print $classes; ?>"<?php print $attributes; ?>>
    <?php if (!$label_hidden): ?>
      <<?php print $heading . $title_attributes; ?>><?php print $label; ?></<?php print $heading; ?>>
    <?php endif; ?>
    <?php if ($count > 1): ?>
      <?php // Use a list for multiple values. ?>
      <ul<?php print $content_attributes; ?>>
        <?php foreach ($items as $delta => $item): ?>
        <li><?php print render($item); ?></li>
        <?php endforeach; ?>
      </ul>
    <?php else: ?>
      <?php // Omit wrapper unless attributes exist for single values. ?>
      <?php if (!empty($content_attributes)): ?><div<?php print $content_attributes; ?>><?php endif; ?>
        <?php print render($items); ?>
      <?php if (!empty($content_attributes)): ?></div><?php endif; ?>
    <?php endif; ?>
  </div>
<?php endif; ?>