WordPress PHP - Shortcode Gallery Images Links

shortcode-gallery-images-links.php

<?php
function getShortcodeGalleryImagesLinks ($shortcode = null) {
  if (!is_string($shortcode)) { return false; }

  preg_match_all('/[0-9]+/', $shortcode, $images);

  if (!empty($images[0])) {
    $images = array_map('intval', $images[0]);
  } else {
    $images = array();
  }

  $imagesReturn = array();
  $baseUrl = get_site_url().'/wp-content/uploads/';
  $sizeList = get_intermediate_image_sizes();

  foreach ($images as $key => $attachmentID) {
    
    $_image = array(
      'meta' => array(),
      'sizes' => array(),
    );

    foreach ($sizeList as $size) {
      
      $imageTmp = wp_get_attachment_image_src($attachmentID, $size);

      $_image['sizes'][$size] = array(
        'url' => $imageTmp[0],
        'width' => $imageTmp[1],
        'height' => $imageTmp[2],
        'is_intermediate' => $imageTmp[3],
      );
      unset($imageTmp);
    }

    $meta = wp_get_attachment_metadata($attachmentID);
    $_image['meta'] = $meta['image_meta'];
    $_image['meta']['id'] = $attachmentID;

    $_image['sizes']['origin'] = array(
      'url' => $baseUrl.$meta['file'],
      'width' => $meta['width'],
      'height' => $meta['height'],
      'is_intermediate' => false,
    );

    $imagesReturn[] = $_image;
    unset($meta);
    unset($_image);
  }

  unset($baseUrl);
  unset($sizeList);
  unset($images);
  return json_decode(json_encode($imagesReturn, JSON_UNESCAPED_UNICODE));
}

$gallery = getShortcodeGalleryImagesLinks('[gallery ids="310,311,313,312"]');
?>