The has_category() WordPress PHP function checks if the current post has any of the given categories.
Usage
has_category( $category, $post )
Input:
has_category( 'travel', $post->ID );
Output:
true or false depending on whether the post has the ‘travel’ category.
Parameters
$category (string|int|array): Optional. The category name, term_id, slug, or an array of them to check for. Default is an empty string.$post (int|WP_Post): Optional. The post to check. Defaults to the current post. Default isnull.
More information
See WordPress Developer Resources: has_category()
Examples
### 1. Check if a post has a specific category
To check if a post has the ‘travel’ category:
if ( has_category( 'travel', $post->ID ) ) {
echo 'The post has the "travel" category.';
} else {
echo 'The post does not have the "travel" category.';
}
Check if a post has any of the specified categories
To check if a post has either the ‘travel’ or ‘lifestyle’ category:
if ( has_category( array( 'travel', 'lifestyle' ), $post->ID ) ) {
echo 'The post has either the "travel" or "lifestyle" category.';
} else {
echo 'The post does not have either the "travel" or "lifestyle" category.';
}
Check if a post has a category by term ID
To check if a post has a category with the term ID 42:
if ( has_category( 42, $post->ID ) ) {
echo 'The post has the category with term ID 42.';
} else {
echo 'The post does not have the category with term ID 42.';
}
Check if a post has a category using a slug
To check if a post has the category with the slug ‘travel-blog’:
if ( has_category( 'travel-blog', $post->ID ) ) {
echo 'The post has the category with the slug "travel-blog".';
} else {
echo 'The post does not have the category with the slug "travel-blog".';
}
Check if a post has any categories
To check if a post has any categories:
if ( has_category() ) {
echo 'The post has at least one category.';
} else {
echo 'The post does not have any categories.';
}