Changeset 8131

Timestamp:

06/20/08 13:52:18 (2 months ago)

Author:

westi

Message:

Add new has_tag() template tag. Fixes #6590 props Otto42.

Files:

• trunk/wp-includes/category-template.php (modified) (1 diff)

trunk/wp-includes/category-template.php

@@ -540 +540 @@
-}
-
+/**
+ * Check if the current post has the given tag
+ *
+ * @package WordPress
+ * @since 2.6
+ *
+ * @uses wp_get_object_terms() Gets the tags.
+ *
+ * @param string|int|array $tag Optional. The tag name/id/slug or array of them to check for
+ * @return bool True if the current post has the given tag, or any tag, if no tag specified
+ */
+function has_tag($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;
+        if ( in_array( $term->name, $tag ) ) return true;
+        if ( in_array( $term->slug, $tag ) ) return true;
+    }
+
+    return false;
+}
+
-?>