Why is the SQL query not being sent?

Question

SQL

$register = mysqli_query($connect,"INSERT INTO `agreement`(`vk`, `time`) VALUES (".$from_id.",".$time."); INSERT INTO `FOUTuser`(`vk`, `first_name`, `last_name`, `photo_id`) VALUES (".$from_id.",'".$first_name."','".$last_name."','".$photo_id."')");

I tried to send the same request (already with entered data) to the DB itself. Everything passed. But still, for some reason the code above doesn't work.

Answer 1

What is the result of the request? What errors does it output?
Most likely, the matter is in the variable $connect, the connection to the database is not established. It is also worth checking the correctness of the data included directly in the query string.