Get ACF fields of taxonomy in foreach loop - php

Question

I have created a function that allows me to display the next/previous category, by order of their position. This is working fine, the problem I am having is getting ACF fields to display specific to each category.
I currently have a colour picker ACF field for every category - which is different for each one, this is set to display on each link. At the moment, the ACF field is only bringing in the hex value from the current category that is being viewed, as opposed to the next/previous ones.
function next_prev_cat() {
$this_taxonomy = get_queried_object();
if (is_category()) {
$taxonomies = get_categories();
}
if (is_tag()) {
$taxonomies = get_tags();
}
foreach ($taxonomies as $position => $tax):
if ($this_taxonomy->term_id == $tax->term_id):
$next_tax = $position + 1;
$prev_tax = $position - 1;
break;
endif;
endforeach;
$showPrev;
$showNext;
if ($prev_tax < 0) {
$prev_tax=count($taxonomies) - 1;
$showPrev='';
} else {
$prev_tax;
$showPrev = $taxonomies[$prev_tax]->name;
}
if ($prev_tax == count($taxonomies)-2) {
$next_tax = 0;
$showNext = '';
} else {
$showNext = $taxonomies[$next_tax]->name;
}
$prevLink = get_term_link( $taxonomies[$prev_tax] );
$nextLink = get_term_link( $taxonomies[$next_tax] );
?>
<div class="area-links">
<a style="border:1px solid <?php the_field('brand_colour', $tax); ?>" href="<?php echo $prevLink;?>"><?php echo $showPrev; ?></a>
<a style="border:1px solid <?php the_field('brand_colour', $tax); ?>"href="<?php echo $nextLink;?>"><?php echo $showNext ?></a>
</div>
<?php
}

Answer 1

Here is updated version of code
function next_prev_cat() {
$this_taxonomy = get_queried_object();
$id_for_color=false;
if (is_category()) {
$taxonomies = get_categories();
}
if (is_tag()) {
$taxonomies = get_tags();
}
$colors=array();
foreach ($taxonomies as $position => $tax):
$id_for_color=$tax->term_id;
$colors[$id_for_color]=get_field('brand_colour', $id_for_color);
$cats=array_push($cats,$id_for_color );
if ($this_taxonomy->term_id == $tax->term_id):
$next_tax = $position + 1;
$prev_tax = $position - 1;
break;
endif;
endforeach;
$showPrev;
$showNext;
if ($prev_tax < 0) {
$prev_tax=count($taxonomies) - 1;
$showPrev='';
} else {
$prev_tax;
$prev_color=$colors[$taxonomies[$prev_tax]->term_id];
$showPrev = $taxonomies[$prev_tax]->name;
}
if ($prev_tax == count($taxonomies)-2) {
$next_tax = 0;
$showNext = '';
} else {
$next_color=$colors[$taxonomies[$next_tax]->term_id];
$showNext = $taxonomies[$next_tax]->name;
}
$prevLink = get_term_link( $taxonomies[$prev_tax] );
$nextLink = get_term_link( $taxonomies[$next_tax] );
?>
<div class="area-links">
<a style="border:1px solid <?php echo $prev_color; ?>" href="<?php echo $prevLink;?>"><?php echo $showPrev; ?></a>
<a style="border:1px solid <?php echo $next_color; ?>"href="<?php echo $nextLink;?>"><?php echo $showNext ?></a>
</div>
<?php}