Implementation example:

CZBXAPI.php:

/**

• Add writable status field to result.
  *
• @param array $result
• @param array $options
  */
  protected function addWritableInfo($result, $options) {
  if (empty($options['is_writable'])) { return $result; }

$pk = $this->pk($this->tableName);

$objs = $this->get(array(
$pk.'s' => zbx_objectValues($result, $pk),
'editable' => true
));
$objs = zbx_toHash($objs, $pk);

foreach ($result as $id => $value)

return $result;
}

Example usage:
CTrigger->get()

$result = $this->addWritableInfo($result, $options);