How can I check if a category exists, and if exists, return the ID; if not, create the category?
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3 Answers
Use Wordpress is_category(), get_cat_ID() and wp_create_category() method.
<?php
$CategoryName = "books";
if(is_category($CategoryName))
$categoryID = get_cat_ID($CategoryName);
else
$categoryID = wp_create_category($CategoryName);
?>
Comments
See wp_create_category().
include( "../../wordpress/wp-config.php" );
include( "../../wordpress/wp-admin/includes/taxonomy.php" );
$cat_id = wp_create_category( "TESTINGLOL" );
echo "created = {$cat_id}\n";
echo "returned = " . get_cat_ID( "TESTINGLOL" );
Output should go like:
created = 37450 returned = 37450
Note that this isn't very efficient, but, does the job.
1 Comment
pp19dd
Note that this method doesn't require checking whether the category already exists - if it does, wp_create_category() will simply return its cat ID.
create_category_if_not_exist($category_name, $echo = true) {
$id = wp_insert_term( $category_name, 'category');
if ( $echo ) return $id;
return $id;
}
Nice all in one function for doing the trick. $category_name would need to be the category slug though.
wp_insert_term() takes care of checking if the category already exists in the database. It will return the $id of the category if it exists and will return the $id of the newly created category if it doesn't pre-exist.
