Codex

Function Reference/get the ID

Contents

Description

Retrieve the numeric ID of the current post. This tag must be within The Loop.

Usage

 <?php get_the_ID(); ?> 

Parameters

This tag has no parameters.

Returns

ID (int) 
The ID of the current post.

Examples

Store the ID

The ID can be stored as a variable using  <?php $postid = get_the_ID(); ?> 

Post Anchor Identifier

get_the_ID() Can be used to provide a unique anchor in a script. For instance, a dynamically-generated drop down menu with actions for each post in an archive could have 

<?php
$id = get_the_ID();
$dropdown = "<select name='dropdown-".$id."' >";
$dropdown .= "<option id='option1-". $id ."'>Option 1</option>";
$dropdown .= "</select>";
?>

This would allow us to use JavaScript to control the element as it has a unique ID, and when submitting it as a form through the POST or GET methods the dropdown box will be sent with a unique ID which allows the script to note which post it is working on. Alternatively a hidden variable could be sent which will allow the script to see which post the submission is referring to 

<?php
echo '<input type="hidden" name="activepost" id="activepost" value="'.get_the_ID().'" />';
?>

If the ID is not called within PHP, then we can use the_ID rather than echo get_the_ID();

Change Log

Since: 2.1.0

Source File

get_the_ID() is located in wp-includes/post-template.php.

Related

body_class(), next_image_link(), next_post_link(), next_posts_link(), post_class(), post_password_required(), posts_nav_link(), previous_image_link(), previous_post_link(), previous_posts_link(), single_post_title, sticky_class(), the_category(), the_category_rss(), the_content(), the_content_rss(), the_excerpt(), the_excerpt_rss(), the_ID(), the_meta(), the_shortlink(), the_tags(), the_title(), the_title_attribute(), the_title_rss(), wp_link_pages()

See also index of Function Reference and index of Template Tags.
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