the_category_ID() WP 0.71

Returns or prints a category ID.

No Hooks.

Return

Int. Category ID.

Usage

the_category_ID( $echo );

$echo(true|false)

Whether to echo the output.
Default: true

Notes

• See: get_the_category()

Changelog

Code of the_category_ID() the category ID ^{WP 5.7}

<?php
function the_category_ID($echo = true) {
	_deprecated_function( __FUNCTION__, '0.71', 'get_the_category()' );

	// Grab the first cat in the list.
	$categories = get_the_category();
	$cat = $categories[0]->term_id;

	if ( $echo )
		echo $cat;

	return $cat;
}