The has_post_parent() WordPress PHP function checks if a given post has a parent post.
Usage
has_post_parent( $post );
Custom example:
if ( has_post_parent( 42 ) ) {
echo 'The post with ID 42 has a parent post.';
} else {
echo 'The post with ID 42 does not have a parent post.';
}
Parameters
$post int|WP_Post|nullOptional. Post ID or WP_Post object. Default is global$post. Default:null
More information
See WordPress Developer Resources: has_post_parent()
Examples
Check if the current post has a parent post
if ( has_post_parent() ) {
echo 'The current post has a parent post.';
} else {
echo 'The current post does not have a parent post.';
}
Display parent post title
if ( has_post_parent() ) {
$parent_post = get_post( get_post()->post_parent );
echo 'Parent post title: ' . $parent_post->post_title;
}
Display parent post permalink
if ( has_post_parent() ) {
$parent_post_id = get_post()->post_parent;
echo 'Parent post permalink: ' . get_permalink( $parent_post_id );
}
Check if a specific post has a parent post
$post_id = 42;
if ( has_post_parent( $post_id ) ) {
echo "The post with ID {$post_id} has a parent post.";
} else {
echo "The post with ID {$post_id} does not have a parent post.";
}
Display a message if a post has a parent post and is in a specific category
$category_slug = 'news';
$post_id = 42;
if ( has_post_parent( $post_id ) && has_category( $category_slug, $post_id ) ) {
echo "The post with ID {$post_id} has a parent post and is in the {$category_slug} category.";
}