$fc_fields = field_get_items('node', $node, 'field_image_teaser');

// Extract the field collection item ids
$ids = array();
foreach ($fc_fields as $fc_field) {
    $ids[] = $fc_field['value'];
}

//Get the entities
$collections = field_collection_item_load_multiple($ids);

//Loop over the array - if you have more than one entity
for ($i = 1; $i <= sizeof($collections); $i++) {
    $collection = $collections [$i];

    //Iterate over all member vars of the FieldCollectionItemEntity object
    foreach($collection as $key => $value) {
        //Look for fields - there are some other class vars, too.
        if (strpos ($key, 'field') !== false) {
            //Search for textfields
            if (isset($value['und']) && is_array($value ['und']) && isset($value['und'][0]['value'])) {
                print "Field ".$key." ".$value['und'][0]['value'];
            }
        }
    }
}

//Iterate over all member vars of the FieldCollectionItemEntity object
        foreach($collection as $key => $value) {
            //Look for fields - there are some other class vars, too.
            if (strpos ($key, 'field') !== false) {
                //Search for textfields
                if (is_array($value) && isset($value['und']) && is_array($value ['und']) && (isset($value['und'][0]['value'])||isset($value['und'][0]['uri']))) {
                    // print "Field ".$key." ".$value['und'][0]['value'];
                    if(isset($value['und'][0]['value']))
                    {
                        $loadedValues[$i][$key] = $value['und'][0]['value'];
                    }
                    else if($value['und'][0]['uri'])
                    {
                        $loadedValues[$i][$key] = $value['und'][0]['uri'];
                    }
                }
            }
        }
        $i++;
    }