Wordpress: Mass Insert Terms (Including Children and Meta)

mass_insert_terms.php

<?php

function wpcrmio_mass_insert_terms( $taxonomy, $terms_array = array() ){
	/*
	$terms_array = array(
		'slug'		=> array(
			'name'				=> '',
			'description'		=> '',
			'meta'				=> '',
			'children'			=> array(
				'slug'		=> array(
					'name'				=> '',
					'description'		=> '',
					'meta'				=> '',
				),
			),
		),
	);
	*/
	if( !is_array( $terms_array ) ){
		return false;
	}
	foreach( $terms_array as $slug => $data ){
		$args = array( 'slug' => $slug );
		
		//add the following attributes to 
		if( isset( $data['description'] ) ){
			$args['description'] = $data['description'];
		}
		if( isset( $data['parent'] ) ){
			$args['parent'] = $data['parent'];
		}		
		if( isset( $data['alias_of'] ) ){
			$args['alias_of'] = $data['alias_of'];
		}
		
		$results = wp_insert_term( $data['name'], $taxonomy, $args );
		//deletes the cash, just in case.
		delete_option("{taxonomy}_children");
		
		if( !is_wp_error( $results) ){
			if( $data['meta'] ){
				foreach( $data['meta'] as $meta_key => $meta_value ){
					update_term_meta( $results['term_id'], $meta_key, $meta_value );
				}
			}
			if( $data['children'] ){
				array_walk( $data['children'], function( &$child ) use ( $results ) {
					return array_merge( $child, array( 'parent' => $results['term_id'] ) );
				} );
				wpcrmio_mass_insert_terms( $taxonomy, $data['children'] );
			}
		}
	}
}
?>