Drupal6常用自定义函数

<?php
/*
 * 提取并显示指定node的内容
 */
function custom_node_view($nid)
{
    $node = node_load($nid);
    return node_view($node);
}

/*
 * 载入指定的block
 */
function block_print($module, $delta)
{
  $block = new stdclass;
  $array = module_invoke($module, 'block', 'view', $delta);

  if (isset($array) && is_array($array)) {
    foreach ($array as $k => $v) {
      $block->$k = $v;
    }
  }

  $block->module = $module;
  $block->delta = $delta;
  return theme('block', $block);
}

/*
 * 得到记录总数
 */
function views_total()
{
    $view = views_get_view( 'VIEWS_NAME' );
    $view->set_arguments( array( 1, 2, 3 ) ); // 如果需要设置参数
    $view->get_total_rows = TRUE;
    $view->execute(); // 执行
    $view->preview(); // 执行并输出views
    return $view->total_rows;
}

/*
 * ahah时，可以在表单回调时得到表单修改状态
 * 由于回调时表单并未提交，此时不能从submit方法中得到表单状态
 * @return form handle
 */
function _callback_helper() {
    $form_state = array('storage' => NULL, 'submitted' => FALSE);
    $form_build_id = $_POST['form_build_id'];
    $form = form_get_cache($form_build_id, $form_state);
    $args = $form['#parameters'];
    $form_id = array_shift($args);
    $form_state['post'] = $form['#post'] = $_POST;
    // Enable the submit/validate handlers to determine whether AHAH-submittted.
    $form_state['ahah_submission'] = TRUE;
    $form['#programmed'] = $form['#redirect'] = FALSE;
    drupal_process_form($form_id, $form, $form_state);
    $form = drupal_rebuild_form($form_id, $form_state, $args, $form_build_id);
    return $form;
}

function readcsv($filepath){
	//$filepath is the path of a csv file
	$result=array();
	if (($handle = fopen($filepath, "r")) !== FALSE) {
		while (($data = fgetcsv($handle, 0, ",")) !== FALSE) {//readall
		   $result[]=$data;
		}
		fclose($handle);
	}
	return $result;
}

/*
 * 检查并创建目录
 * $filepath 目录地址
 */
function custom_file_directory($filepath)
{
    if (!file_check_directory($filepath, FILE_CREATE_DIRECTORY) && !mkdir($filepath, 0775, TRUE)) {
        watchdog('custom', 'Failed to create directory: %dir', array('%dir' => $filepath), WATCHDOG_ERROR);
        return false;
    } else {
        return true;
    }
}

/*
 * 查询指定content type中的vocabulary name
 */
function vocabulary_by_node_type($content_type)
{
    $sql = sprintf('SELECT v.* FROM {vocabulary} v
            JOIN {vocabulary_node_types} node_type ON node_type.vid = v.vid
            WHERE node_type.type = %s ORDER BY weight', db_placeholders($content_type));
    $vocabularys = array();
    $result = db_query($sql);
    while ($vocabulary = db_fetch_object($result)) {
        $vocabularys[] = $vocabulary;
    }
    return $vocabularys;
}

/*
 * vocabulary下的term name
 */
function term_by_vocabulary_id($vid)
{
    $result = db_query(sprintf('SELECT term_data.* FROM {term_data} term_data WHERE term_data.vid = %d ORDER BY weight', $vid));
    $terms = array();
    while ($term = db_fetch_object($result)) {
        $terms[] = $term;
    }
    return $terms;
}


/*
 * 获得CCK字段的allowed values数组，例如dropdown
 */
function cck_allowed_value($fieldname)
{
    $global_settings = db_result(db_query("SELECT global_settings FROM {content_node_field} WHERE field_name = '%s'", db_escape_string($fieldname)));
    $global_settings = unserialize($global_settings);
    $allowed_values = $global_settings['allowed_values'];
    $allowed_values = str_replace("\r\n", "|", $allowed_values);
    $allowed_values = str_replace("\n", "|", $allowed_values);
    return explode('|', $allowed_values);
}

/*
 * 把menu tree组装成数组
 */
function menu_list($name = 'navigation', $depth = 1, $mlid = 0)
{
    ($depth < 10) or die("depth too big.");
    $results = array();
    $cid = $name.'_menu_list_'.$depth;
    $cache = $depth > 1 ? false : cache_get($cid);
    if(!$cache) {
        $db_result = db_query("SELECT mlid, link_title FROM {menu_links} WHERE hidden<=0 AND depth = %d AND plid = %d AND menu_name = '%s' AND link_title <> '' ORDER BY weight", $depth, $mlid, $name);
        while($row = db_fetch_object($db_result)) {
            $childs = menu_list($name, $depth+1, $row->mlid);
            $results[]= array('data' => $row, 'children' => $childs);
        }
        unset($db_result);
        
        if($depth == 1) cache_set($cid, $results);
    } else {
        $results = $cache->data;
    }
    return $results;
}

/*
 * 文件上传
 * $module module的名称
 * $source 文件字段名
 * $validators 文件验证信息
 */
function file_upload($module, $source, $validators = array(
    'file_validate_extensions' => array('jpg', 'png'),
    //'file_validate_image_resolution' => array($limits['resolution']),
    'file_validate_size' => array(204800)
))
{
    $validators = array();
    $dest = file_directory_path().'/'.$module.'/';
    file_create_directory($module, $dest);
    $file = file_save_upload($source, $validators, $dest);
    if ($file != 0) {
        return array(
            'status' => true,
            'filepath' => $file->filepath
        );
    }
    else {
        return array('status' => true);
    }
}

/*
 * 新建目录
 * $module module名称
 * $dir 目录路径
 */
function file_create_directory($module, $dir)
{
    if (!file_check_directory($dir, FILE_CREATE_DIRECTORY) && !mkdir($dir, 0775, TRUE)) {
        watchdog($module, 'Failed to create directory: %dir', array('%dir' => $dir), WATCHDOG_ERROR);
        return false;
    }
}

function set_meta($keywords, $description)
{
    drupal_set_html_head("<meta name='keywords' content='$keywords' /><meta name='description' content='$description' />");
}

/*
 * 静态优化的drupal_lookup_path
 */
function drupal_lookup_path($action, $path ='') {
    static $map = array();
    if ($action == 'wipe') {
        $map = array();
        return FALSE;
    }
    if ($path != '') {
        // Initial load from DB
        if (count($map) == 0) {
            $result = db_query('SELECT src, dst FROM {url_alias}');
            while ($url = db_fetch_object($result)) {
                $map[$url->src] = $url->dst;
                $map[$url->dst] = $url->src;
            }
        }
        // $action == ‘alias’ or $action == ‘source’
        if (isset($map[$path])) return $map[$path];
    }
    return FALSE;
}

/*
 * 从nid得到图片信息
 * @return array(width, height, extension, file_size, mime_type)
 */
function image_get_info_by_node($nid, $fieldname = 'field_image')
{
    $node = node_load($nid);
    $results = array();
    foreach($node->$fieldname as $image) {
        $results []= image_get_info($image['filepath']);
    }
    return $results;
}

/*
 * 用于views template中输出字段
 * views_view_fileds_print_field($fields, 'field_website_value')
 */
function views_view_fileds_print_field(&$fields, $fieldname) 
{
	if(!isset($fields[$fieldname])){
		return false;
	}
	$field = $fields[$fieldname];

	if (!empty($field->separator)): ?>
		<?php print $field->separator; ?>
	<?php endif; ?>
	<<?php print $field->inline_html;?> class="views-field-<?php print $field->class; ?>">
		<?php if ($field->label): ?>
			<label class="views-label-<?php print $field->class; ?>">
				<?php print $field->label; ?>:
			</label>
		<?php endif; ?>
			<?php
			// $field->element_type is either SPAN or DIV depending upon whether or not
			// the field is a 'block' element type or 'inline' element type.
			?>
			<<?php print $field->element_type; ?> class="field-content"><?php print $field->content; ?></<?php print $field->element_type; ?>>
	</<?php print $field->inline_html;?>>
	<?php
	unset($fields[$fieldname]);
}