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i have been using this code to get all fields from a specific group:

<?php
$GroupOrPostSlug = 'acf_specialgroup';
//or insert the ID of your fields Group.
$groupID='';



global $wpdb;
if (empty($groupID))
{$groupID = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE post_name =  '$GroupOrPostSlug' ");}
if (empty($groupID))
{$groupID = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE post_title =  '$GroupOrPostSlug' ");}

$custom_field_keys = get_post_custom_keys($groupID);
foreach ( $custom_field_keys as $key => $fieldkey )
{
    if (stristr($fieldkey,'field_'))
    {
        //echo $key . " => " . $fieldkey . "<br />";
        //echo $field['label'] . ': ' . $field['value'];
        //echo $fieldkey . "<br />";
        $field = get_field_object($fieldkey, $groupID);
        echo $field['label'];

    }
}
?>

but it displays only fields' names. doesnt there exist a simple hook/function, something like this: get_all_fields_from_group($id)

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3 Answers 3

Thank you so much for your post, I spent half day to figure out how to get field names by their group.

If you have field names, you can easily get their values: get_field($field['name']);

EXAMPLE HOW TO GET IMAGES FOR SLIDER

    <?php 
                    //or insert the ID of your fields Group.
                    $groupID='116';
                    $custom_field_keys = get_post_custom_keys($groupID);
                    foreach ( $custom_field_keys as $key => $fieldkey )
                    {
                        if (stristr($fieldkey,'field_'))
                        {
                            //echo $key . " => " . $fieldkey . "<br />";
                            //echo $field['label'] . ': ' . $field['value'];
                            //echo $fieldkey . "<br />";
                            $field = get_field_object($fieldkey, $groupID); 

                            $acf_field_name = $field['name'];

                            $attachment = get_field($acf_field_name);
                            echo "<img src='".$attachment['url']."' title='".$attachment['title']."'/>";


                        }
                    }

?> 

Thanks again!

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This was REALLY useful! Thanks. –  Jake Sep 7 '13 at 3:22

Here's a function I created to get a group's fields:

function my_acf_get_fields_in_group( $group_id ) {
    $acf_meta = get_post_custom( $group_id );
    $acf_fields = array();

    foreach ( $acf_meta as $key => $val ) {
        if ( preg_match( "/^field_/", $key ) ) {
            $acf_fields[$key] = $val;
        }
    }

    return $acf_fields;
}
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In case anyone stumbled upon this page like I did, and tried to figure this out, these methods won't work anymore with Version 5 and above of Advanced Custom Fields as it's usings posts instead of postmeta.

In that environment, this is the way I was able to get fields from a group and use them as values for a select field:

function acf_load_select_choices( $field ) {

  global $wpdb;
  $group_slug = 'Name or slug of the group';

  $group_ID = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE post_name =  '$group_slug' "); 
  if (empty($group_ID))
    $group_ID = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE post_title =  '$group_slug' ");

  $field['choices'] = array();
  $fields = acf_get_fields_by_id($group_ID);

  // to see what $fields contains, use:
  echo '<pre>'.var_dump($fields).'</pre>';

  if( $fields ) {
    foreach( $fields as $fieldrow ) {
      $field['choices'][ $fieldrow['name'] ] = $fieldrow['label'];
    }
  }

  return $field;

}

add_filter('acf/load_field/name=selectfieldname', 'acf_load_select_choices');
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