Remove height attribute from wp_get_attachment

Question

I found this great solution: Stop wordpress from hardcoding img width and height attributes

But I was wondering if I could do it only in one specific case and not in all the site because it messes up other stuff. This would be the case:

<?php echo wp_get_attachment_image($attachment->ID, 'six', false, $default_attr); ?>

Removing only height but not width in all the site would also work.

Answer 1

This worked for me.

function remove_width_and_height_attribute( $html ) {
   return preg_replace( '/(height|width)="\d*"\s/', "", $html );
}

and then change

wp_get_attachment_image_src( $attachment_id, 'full' );

to

remove_width_and_height_attribute(wp_get_attachment_image_src( $attachment_id, 'full' ));

Answer 2

You can also get the data for width and hight of a image.

$src = wp_get_attachment_image_src( $attachment_id, 'full' );
var_dump($src);

the var_dump output like this:

array
  0 => string 'http://example.com/wp-content/uploads/2009/08/DSC00261.JPG' (length=63)
  1 => int 1632
  2 => int 1224
  3 => boolean false

The results mean:

$src[0] => url
$src[1] => width
$src[2] => height
$src[3] => icon

Answer 3

One specific case and not in all the site.

Fx. If you want to remove width="400" from WordPress a HTML output function, you could do this:

Somewhere in a file:

ob_start(); // Start buf
wp_get_attachment_image($imageID, 'full', false); //'full' = size
$htmlString = ob_get_clean(); // output to variable
echo preg_replace('/width="\d*"/','',$variable); // Remove width attribute and whatever digit inside.

Maybe not the most elegant solution, but it gets the job done.