CFS synchronize for loop fields

Replaced tabs with spaces

/**
 * Map postmeta to CFS fields
 */
function cfs_map_values() {
    global $wpdb;

    // CFS field groups
    $field_groups = cfs_get_field_groups();

    $query = new WP_Query( array(
        'post_type' => 'any',
        'posts_per_page' => -1,
        'post_status' => 'publish',
        'fields' => 'ids',
    ) );

    foreach ( $query->posts as $post_id ) {
        $matching_groups = CFS()->api->get_matching_groups( $post_id );
        if ( ! empty( $matching_groups ) ) {

            // Get all postmeta values for this post ID
            $postmeta = get_post_meta( $post_id );
            $field_data = array();

            // See which fields are already in the cfs_values table for this post ID
            $existing_field_ids = $wpdb->get_col( "
                SELECT DISTINCT field_id FROM {$wpdb->prefix}cfs_values WHERE post_id IN ('$post_id')"
            );

            // Loop through field groups
            foreach ( $matching_groups as $group_id => $group_name ) {
                // Loop through fields within this group
                foreach ( $field_groups[ $group_id ] as $field ) {
                    // Skip if CFS values already exist
                    if ( in_array( $field['id'], $existing_field_ids ) ) {
                        continue;
                    }

                    if ( ! empty( $postmeta[ $field['name'] ] ) ) {
                        $field_data[ $field['name'] ] = $postmeta[ $field['name'] ];
                    }
                }
            }

            // Save the values
            if ( ! empty( $field_data ) ) {
                // Loop through field groups in search for loop fields
                foreach ( $matching_groups as $group_id => $group_name ) {
                    // Loop through fields within this group searching for fields that have parents
                    foreach ( $field_groups[ $group_id ] as $field ) {
                        // Continue if there's no data for this field or if it doesn't have a parent
                        if ( !isset( $field_data[ $field['name'] ] ) || $field['parent_id'] == 0 ) {
                            continue;
                        }
                        // Try to find the parent field
                        $parent_field = null;
                        foreach ( $field_groups[ $group_id ] as $temp_field ) {
                            if ( $temp_field['id'] != $field['parent_id'] ) {
                                continue;
                            }
                            $parent_field = $temp_field;
                            break;
                        }

                        if ( is_null( $parent_field ) ) {
                            continue;
                        }

                        // If another field has already gone through this process, it needs to have the same number of elements
                        if ( isset( $field_data[ $parent_field['name'] ] ) && count( $field_data[ $parent_field['name'] ] ) != count( $field_data[ $field['name'] ] ) ) {
                            unset( $field_data[ $parent_field['name'] ] );
                            continue;
                        }

                        // Let's set the values for the parent field, and also remove "old" data
                        $values = $field_data[ $field['name'] ];
                        unset( $field_data[ $field['name'] ] );
                        if ( !isset( $field_data[ $parent_field['name'] ] ) ) {
                            $field_data[ $parent_field['name'] ] = array();
                        }
                        foreach ( $values as $i => $v ) {
                            // If no other fields that are children of this loop field have been set, initialize it's value
                            if ( !isset( $field_data[ $parent_field['name'] ][ $i ] ) ) {
                                $field_data[ $parent_field['name'] ][ $i ] = array();
                            }
                            // Sets the field value at the appropriate position
                            $field_data[ $parent_field['name'] ][ $i ][ $field['name'] ] = $v;
                        }
                    }
                }

                CFS()->save( $field_data, array( 'ID' => $post_id ) );
            }
        }
    }
}

OK! Just give me a few days, I’m finishing up a project. Thanks!