Changes the taxonomy checkboxes into radios so only one can be selected

wp_taxonomy_radios.php

<?php

/**
 * Changes the taxonomy checkboxes into radios so only one can be selected
 *
 * @param string|array $taxonomies Taxonomy(s) to be affected
 * @param string|array $post_types Post Type(s) to be affected
 */
function taxonomy_radios( $taxonomies, $post_types ) {
	// Ensure params are arrays
	if ( !is_array( $taxonomies ) ) $taxonomies = [ $taxonomies ];
	if ( !is_array( $post_types ) ) $post_types = [ $post_types ];
	// Loop through post types
	foreach ( $post_types as $post_type ) {
		// If correct post type, add action to output script
		if ( Posts::get_post_type() === $post_type ) {
			add_action( 'admin_footer', function() use ( $taxonomies ) {
				echo '<script>';
				foreach ( $taxonomies as $taxonomy ) {
					echo 'jQuery("[id^=in-'.$taxonomy.']").attr("type", "radio");';
					echo 'jQuery("#'.$taxonomy.'-tabs").hide();';
				}
				echo '</script>';
			} );
		}
	}
}