<?php
ee()->load->library('api');
ee()->api->instantiate('channel_entries');
ee()->api->instantiate('channel_fields');
ee()->api->instantiate('channel_categories');

$title = 'your title';
$friendlyUrl = 'your friendly url';

$query = ee()->db->get_where('channel_titles', array('url_title' => $friendlyUrl), 1);
if($query->num_rows() > 0)
{
	$row = $query->row();
	$entry_id = $row->entry_id;
	if ($entry_id != FALSE)
	{
		$data = array(
			// set your values, see below for an example
			'title' => $title
		);
			
		ee()->api_channel_fields->setup_entry_settings(1, $data);
		if (ee()->api_channel_entries->save_entry($data, 1, $entry_id) === FALSE) {
			echo 'Error';
		}
		else {
			echo "Success";
		}
	}
}
?>