i have been working on a shortcode and I am having trouble passing $atts to it.

i can't figure out what i am doing wrong.

To say it another way, i cannot update 'input_product_image_ID' to a different value from it's default value of 13 by inserting a new value into the shortcode.

for example this shortcode would still return 13, not 12:

[product_picture input_product_image_ID="12"]

My code:

function article_image_insert_shortcode($atts) {
      'input_product_image_ID' => 13,
   ), $atts));

$product_id = $input_product_image_ID;

// get product page url which is stored as caption 
$product_page_url           = get_post_field('post_excerpt', $product_id );

// get and insert image 
$product_image              = wp_get_attachment_image( $product_id , full_size );

// get image alt text which serves as the image title 
$product_description_alt    = get_post_meta($product_id , '_wp_attachment_image_alt', true);

// get image caption where link is stored

$thumb_img = get_post( get_post($product_id) );

// assign caption 

$product_aff_url            = $thumb_img->post_content;

$article_image_insert_shortcode = /* do some stuff */;

return $article_image_insert_shortcode;


add_shortcode('product_picture', 'article_image_insert_shortcode');
  • Yes because you are defining input_product_image_ID to 13 in shortcode function itself.
    – Robert hue
    Dec 24, 2014 at 10:56
  • im not sure that is it, shouldn't that value update from shortcode atts? Dec 24, 2014 at 11:11
  • for example, this shortcode defines $atts similarly to mine, and yet it still updates function random_picture($atts) { extract(shortcode_atts(array( 'width' => 400, 'height' => 200, ), $atts)); return '<img src="http://lorempixel.com/'. $width . '/'. $height . '" />'; } add_shortcode('picture', 'random_picture'); Dec 24, 2014 at 11:15
  • Okay, use attribute name in lower case input_product_image_id instead of input_product_image_ID
    – Robert hue
    Dec 24, 2014 at 11:16
  • thanks that did it--- I can't use caps like that in atts? in any case I appreciate your help!! Dec 24, 2014 at 11:21

1 Answer 1


To add to the answers in the comments from RH, I found this in the codex (it's kind of burried deep):

  • Shortcode attribute names are always converted to lowercase before they are passed into the handler function. Values are untouched.

This is from: http://codex.wordpress.org/Function_Reference/add_shortcode#Parameters

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