Show (print) featured image all dimensions (height, width)

Question

<a class="classname" href="<?php the_post_thumbnail_url( 'full' ); ?>">Full Image</a>

Im using this code: Output is text "Full Image" linked to the post url of the full featured image. What I want to achieve is to add dimensions to show for that image as f.e:

"Full Image 600x400" or Only "(600x400)"

Thanks!

Answer 1

Add this function to your functions.php file:

function show($size = NULL) {
    global $post;
    $post_thumbnail_id = get_post_thumbnail_id( $post->ID );
    if(isset($size)){
        $image_data_array = wp_get_attachment_image_src($post_thumbnail_id,$size);
    }else{
        $image_data_array = wp_get_attachment_image_src($post_thumbnail_id);//Default value: 'thumbnail'
    }
    echo $image_data_array[1]."x".$image_data_array[2];//here you can add more chars of strings if you want
}

and use it like this:

<a class="classname" href="<?php the_post_thumbnail_url( 'full' ); ?>">Full Image <?php show('full'); ?></a>

this is outputting WidthxHeight, you can use any default image size thumbnail, medium, medium_large, large, full or any custom size you have added using add_image_size()