Return the schema in a php friendly format. The schema will be given as an associative array in the following format:
'type' => The type of the field, 'default' => The default value as was given from Infopath, 'required' => True/false depending on whether this was selected in Infopath, 'size' => The size of the field, 'options' => If this field has specific options, they will be listed here 'option_type' => One of either: select/multiselect/radio/checkbox