How to get MYSQL error in different environments?

Question

I have a mysql query that would not execute and I would like to display information about why that's happening.

$myQuery= $mysqli->query("UPDATE table SET id = 1 WHERE id = 3");
if(!$myQuery) //If query couldnt be executed
{
echo $mysqli->error; //Display information about why wasnt executed (eg. Error: couldnt find table)
}