Conditional tag for if a post has a certain tag

Alright, I did some snooping around and I think I’m getting closer.

I think I should be using get_the_tags(). But the thing is, it’s still not working. I then tried to echo what get_the_tags() was giving me (for a post that had a tag) and it printed “Array.” The tag is called breaking. Here’s my updated code (including my test to echo what get_the_tags() is spitting out).

<?php // If the post is breaking news, insert the last time it was updated
$posttags = get_the_tags();
echo "$posttags"; // what the heck is get_the_tags printing??
if($posttags == 'breaking') { // if tag is 'breaking'
echo "This breaking story was last updated on";
post_updated('F jS, Y \at h:i:s A', 0, '', '');
} else { // if not a breaking story, just print the date
the_time('F jS, Y');
} ?>

Any help would be greatly appreciated! Thanks.

It would be simpler if you just made a ‘breaking’ category instead of a tag (here it is as category ID 44):

<?php if (in_category(44)) { ?>
<?php echo "This breaking story was last updated on";
post_updated('F jS, Y \at h:i:s A', 0, '', ''); ?>
<?php } else { ?>
<?php the_time('F jS, Y') ?>
<?php } ?>

Here is a page with more info:

https://codex.www.ads-software.com/Template_Tags/in_category

I saw that in the codex last night… and I’m reconsidering. I was just hoping to not have to deal with anything other than top-level categories (eg. News, Sports, Features, etc.).

I hacked around some more last night and left it with if($posttags == Array) since that’s what get_the_tags() was printing for that post. Currently, I don’t have any other posts with tags, so that worked fine. But I know there has to be a way to do what I want.

I was thinking of possibly using Custom Fields. I know I will end up having some of those anyway (for Issue/Volume information), so I’m gonna have to deal with it eventually.

Thanks

I made a patch to do this sort of thing but it hasn’t been added to the core code yet: https://trac.www.ads-software.com/ticket/6590

You can do this by adding this to your theme’s functions.php file:

function has_tag($tag = '') {
	global $post;
	$taxonomy = "post_tag";

	if ( !in_the_loop() ) return false; // in-the-loop function

	$post_id = (int) $post->ID;

	$terms = get_object_term_cache($post_id, $taxonomy);
	if (empty($terms))
	       	$terms = wp_get_object_terms($post_id, $taxonomy);
	if (empty($terms)) return false;

	if (empty($tag)) return (!empty($terms));

	$tag = (array) $tag;
	foreach($terms as $term) {
		if ( in_array( $term->term_id, $tag ) )
			return true;
		elseif ( in_array( $term->name, $tag ) )
			return true;
		elseif ( in_array( $term->slug, $tag ) )
			return true;
	}

	return false;
}

Then just use it, in the loop, like this:

if (has_tag('breaking')) {
// whatever...
}

Hopefully this will get included in the core soon.

Yes! Thank you so much! I knew there was a way to define these sorts of things but I didn’t know how! functions.php! Of course.

And I agree- I’d like to see it in the core… I think if we’re gonna have in_category(), we should have an equivalent for tags.

Again, thanks so much Otto.

Can I do this same sort of thing for attachments? I want to use
‘echo wp_get_attachment_link’ to put image attachments on my home page,

but only for certain images. Would be nice if I could just add tags to the images that I want to use.