get_the_terms() will always return an array; but because you have only one ‘project_category’, you can simply use its first element: add_shortcode( ‘return_taxonomy_slug’, ‘my_shortcode_return_taxonomy_slug’ ); function my_shortcode_return_taxonomy_slug() { $terms = get_the_terms( get_the_ID(), ‘project_category’); return $terms[0]->slug; }
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I’m a sucker for regular expressions: <?php $category = ‘test-category’; $category = preg_replace(‘/-/’, ‘ ‘, $category); $category = ucwords($category); echo $category;
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This should be a comment but I have not enough reputation yet, sorry for that… As Jacob said in his comment this is the normal behaviour. However this issue has already been discussed many times. Check this Q/A as an example: https://stackoverflow.com/questions/17798815/remove-category-tag-base-from-wordpress-url-without-a-plugin