How can I retrive the usage of drupal by API？

/**

• Custom content function.
• Set beginning and end dates, retrieve posts from database
• saved in that time period.
• @return
• A result set of the targeted posts. */ function current_posts_contents(){ //Get today’s date. $today = getdate(); //Calculate the date a week ago. $start_time = mktime(0, 0, 0,$today[‘mon’],($today[‘mday’] - 7), $today[‘year’]); //Get all posts from one week ago to the present. $end_time = time();

//Use Database API to retrieve current posts. $query = db_select(‘node’, ‘n’) ->fields(‘n’, array(‘nid’, ‘title’, ‘created’)) ->condition(‘status’, 1) //Published. ->condition(‘created’, array($start_time, $end_time), ‘BETWEEN’) ->orderBy(‘created’, ‘DESC’) //Most recent first. ->execute(); return $query;
} (Remember not to include the closing ?> in your code.)