Drupal 7 common theme functions

file.tpl.php

// _-______Basic translatable string_______________________________
  <?php print t('STRING !VARIABLE1 @VARIABLE2 %VARIABLE3', array(
    '@VARIABLE2' => 'VALUE ESCAPED & FORMATED',
    '%VARIABLE3' => 'VALUE ESCAPED',
    '!VARIABLE1' => 'VALUE AS IS',
  )); ?>
  
      // _-______string translatable with link_______
// _-______Basic link_______________________________
  <?php print l(t('TEXT'), 'URL', 
    array('fragment' => 'VALUE' //#VALUE
      'query' => array('QUERY' => 'VALUE')
      'attributes' => array(
        'id' => 'ID', 
        'class' => 'CLASS',
        'target' => '_blank'
      ), 
    ); 
  ); ?>
  
// _-______Print fields with multiple values_______________________________
  <?php if(isset($content['FIELD'])): ?>
    <?php foreach($content['FIELD']['#items'] as $key => $item): ?>
      <?php print $content['FIELD']; ?>
    <?php endforeach; ?>
  <?php endif; ?>
  
      // _-______print a simple image inside the preivious loop_______________________________
  <? print theme('image', array(
    'path' =>  $item['uri'],
    'alt' => $item['alt'],
    'attributes' => array('class' => 'img-'.$key),
  )); ?>

      // _-______print a image with image styles inside the preivious loop_______________________________
  <? print theme('image_style', array(
    'path' =>  $item['uri'],
    'alt' => $item['alt'],
    'attributes' => array('class' => 'img-'.$key),
    'style_name' => '480x350',
  )); ?>
  
  

Some Drupal theming snippets I use too often