ACF - display image and alt text

acf_image_array.php

(1)
<?php 
  $imageArray = get_field('footer_logo', 'options');
  $imageAlt = $imageArray['alt'];
  $imageURL = $imageArray['sizes']['thumbnail'];
?>
<img src="<?php echo $imageURL;?>" alt="<?php echo $imageAlt; ?>">
      
(2)             
<?php 
  $imageArray = get_sub_field('image');
  $imageAlt = $imageArray['alt'];
  $imageURL = $imageArray['sizes']['medium'];

echo '<img src="'.$imageURL.'" alt="'.$imageAlt.'">';
?>

(3)
<?php 
  $imageArray = get_field('header_image');
  $imageURL = $imageArray['url'];
?>
<div class="page-header" style="background-image: url('<?php echo $imageURL;?>');">

And on a taxnomomy archive page:

<?php 
// vars
  $queried_object = get_queried_object(); 
  $taxonomy = $queried_object->taxonomy;
  $term_id = $queried_object->term_id;  

  // load thumbnail for this taxonomy term (term object)
  $imageArray = get_field('image', $queried_object);
  $imageURL = $imageArray['url'];
?>
<div class="page-header" style="background-image: url('<?php echo $imageURL;?>');">