post get categories only 1in wordpress

To get the categories in WordPress, you can use the get_categories() function. Here's an example of how you can use it to retrieve only one category:

$args = array(
    'number' => 1 // Limit the number of categories to 1
);

$categories = get_categories($args);

if (!empty($categories)) {
    foreach ($categories as $category) {
        echo $category->name; // Display the category name
    }
} else {
    echo 'No categories found.';
}

You can modify the $args array to include other parameters such as exclude, include, or orderby to customize the query further