getImageMeta

getImageMeta.php

<?php

    /**
     * Returns image meta data based on the image ID supplied
     *
     * @param int $imageID The image post id
     * @return array
     */
    public static function getImageMeta($imageID)
    {
        $meta       = array();

        if(!is_int($imageID) || wp_attachment_is_image($imageID)) {
            return $meta;
        }

        $imageSlugs = get_intermediate_image_sizes();
        $image      = get_post($imageID);
        
        $meta['title']          = $image->post_title;
        $meta['caption']        = $image->post_excerpt;
        $meta['description']    = $image->post_content;
        $meta['alt']            = get_post_meta($image->ID, '_wp_attachment_image_alt', true);

        foreach($imageSlugs as $slug) {
            $meta['sizes'][$slug] = array(
                'width' => wp_get_attachment_image_src($image->ID, $slug)[1],
                'height' => wp_get_attachment_image_src($image->ID, $slug)[2],
            );

            $meta['urls'][$slug] = wp_get_attachment_image_src($image->ID, $slug)[0];
        }

        return $meta;
    }

output:

array
  'title' => 'Test Image'
  'caption' => 'This is a Test Image caption'
  'description' => 'This is a Test Image Description'
  'alt' => 'Alternative Text for the Test Image'
  'href' => 'http://london.sierrabravo.net/~ssmith/somesite/test-image/'
  'src' => 'http://london.sierrabravo.net/~ssmith/somesite/content/uploads/2014/05/test.jpg'
  'sizes' => array
      'thumbnail' => array
          'width' => 150
          'height' => 150
      'medium' => array
          'width' => 265
          'height' => 300
      'large' => array
          'width' => 906
          'height' => 1024
      'spotlight' => array
          'width' => 1068
          'height' => 575
  'urls' => array
      'thumbnail' => 'http://london.sierrabravo.net/~ssmith/somesite/content/uploads/2014/05/test-150x150.jpg'
      'medium' => 'http://london.sierrabravo.net/~ssmith/somesite/content/uploads/2014/05/test-265x300.jpg'
      'large' => 'http://london.sierrabravo.net/~ssmith/somesite/content/uploads/2014/05/test-906x1024.jpg'
      'spotlight' => 'http://london.sierrabravo.net/~ssmith/somesite/content/uploads/2014/05/test-1068x575.jpg'