Output Fields Of Entire Group Advanced Custom Fields

I’m trying to find a way (using the wordpress plugin ACF) to output an entire group of fields.

I have two “Field Groups” and I want to say if either of them is “Active” (with a checkbox) to echo them to my template.

The question is, how do I get an array of all the fields data from one “Field Group”?

Right now I am attempting something like the following:

<?php

$group_ID = 37;

$fields = array();
$fields = apply_filters('acf/field_group/get_fields', $fields, $group_ID);

echo "<pre>";
print_r($fields);
echo "</pre>";

?>

It outputs an array of fields but as far as I can tell it contains no actual data:

Array
(
    [0] => Array
        (
            [key] => field_537b79d92081f
            [label] => Active-1
            [name] => active-1
            [_name] => active-1
            [type] => true_false
            [order_no] => 0
            [instructions] => 
            [required] => 0
            [id] => acf-field-active-1
            [class] => true_false
            [conditional_logic] => Array
                (
                    [status] => 0
                    [rules] => Array
                        (
                            [0] => Array
                                (
                                    [field] => null
                                    [operator] => ==
                                )

                        )

                    [allorany] => all
                )

            [message] => 
            [default_value] => 0
            [field_group] => 37
        )

    [1] => Array
        (
            [key] => field_537b78a4c743e
            [label] => Title-1
            [name] => title-1
            [_name] => title-1
            [type] => text
            [order_no] => 1
            [instructions] => 
            [required] => 0
            [id] => acf-field-title-1
            [class] => text
            [conditional_logic] => Array
                (
                    [status] => 0
                    [rules] => Array
                        (
                            [0] => Array
                                (
                                    [field] => field_537b79d92081f
                                    [operator] => ==
                                    [value] => 1
                                )

                        )

                    [allorany] => all
                )

            [default_value] => 
            [placeholder] => 
            [prepend] => 
            [append] => 
            [formatting] => html
            [maxlength] => 
            [field_group] => 37
        )

    [2] => Array
        (
            [key] => field_537b78c6c743f
            [label] => Info-1
            [name] => info-1
            [_name] => info-1
            [type] => textarea
            [order_no] => 2
            [instructions] => 
            [required] => 0
            [id] => acf-field-info-1
            [class] => textarea
            [conditional_logic] => Array
                (
                    [status] => 0
                    [rules] => Array
                        (
                            [0] => Array
                                (
                                    [field] => field_537b79d92081f
                                    [operator] => ==
                                    [value] => 1
                                )

                        )

                    [allorany] => all
                )

            [default_value] => 
            [placeholder] => 
            [maxlength] => 
            [rows] => 
            [formatting] => br
            [field_group] => 37
        )

)

I would like to basically do the following (excuse the sudo/broken code, PHP isn’t my language):

<?php

    $group_ID1 = 37;

    $fields = array($group_ID1);

    if ($fields1['active'] !== null) {
        echo "<h1>";
        echo $fields1['active']['text'];
        echo $fields1['title']['text'];
        echo $fields1['content']['text'];
        echo "<h1>";
    }

    $group_ID2 = 38;

    $fields2 = array($group_ID2);

    if ($fields2['active'] !== null) {
        echo "<h1>";
        echo $fields2['active']['text'];
        echo $fields2['title']['text'];
        echo $fields2['content']['text'];
        echo "<h1>";
    }

?>

I can also get a specific fields data like below:

<?php

    $field_key = "field_537b78c6c743f";
    $field = get_field_object($field_key);

    if($field) {
        echo "<pre>";
        print_r($field);
        echo "</pre>";
    }

?>

Which outputs the following:

Array
(
    [key] => field_537b78c6c743f
    [label] => Info-1
    [name] => info-1
    [_name] => info-1
    [type] => textarea
    [order_no] => 2
    [instructions] => 
    [required] => 0
    [id] => acf-field-info-1
    [class] => textarea
    [conditional_logic] => Array
        (
            [status] => 0
            [rules] => Array
                (
                    [0] => Array
                        (
                            [field] => field_537b79d92081f
                            [operator] => ==
                            [value] => 1
                        )

                )

            [allorany] => all
        )

    [default_value] => 
    [placeholder] => 
    [maxlength] => 
    [rows] => 
    [formatting] => br
    [field_group] => 37
    [value] => testtesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttest
)

But do I really need to call each field key for each “Field Group”? Is there not an array of all the fields in one “Field Group”?