Get the object ID by URL

Question

I have an URL (such as the URL /sample-page/), I need the corresponding object ID. How?

Answer 1

Try this function:

url_to_postid( $url );

The WordPress codex is your friend. A quick Google search could have provided the answer.

Answer 2

Use get_queried_object_id() a mapper for WP_Query::get_queried_object_id().

Unlike url_to_postid() you don't have to know the URL and it works on taxonomies and custom post types too (if I remember this correct).

For a usage example see my answer to Get current term's ID.

Answer 3

The other answers are valid, but just to add another (usually unknown, but very usefull ) method that is supplied by a function called :get_page_by_path();

$page =get_page_by_path('parent-page/sub-page');

It is worthy to note that the path parameter can even take a SLUG as parameter. Example :

$page = get_page_by_path('your-slug-of-page-to-exclude');
wp_list_pages('exclude='.$page->ID.'&title_li=');

then you could use $page->ID

Answer 4

I had the same problem, only with custom post types. Unfortunately url_to_postid( $url ); is not working with custom types, so I ended up using this function bwp_url_to_postid($url). This function extend url_to_postid( $url ); to work with custom post types.

If you have the permalink of the URL, then:

<?php $postLink = get_permalink($post_object->ID); ?>
<?php $postId = bwp_url_to_postid($link); ?>
<?php echo $postId ?>