$query = "INSERT INTO abc VALUES ('1', '2', '3')";
$send_to_mysql = mysqli_query($connection, $query);
OK.
$query = "CREATE TABLE abc (a varchar(255), b varchar(255), c varchar(255))";
$send_to_mysql = mysqli_query($connection, $query);
OK.
$query = "CREATE TABLE abc (a varchar(255), b varchar(255), c varchar(255))";
$query .= "INSERT INTO abc VALUES ('1', '2', '3')";
$send_to_mysql = mysqli_multi_query($connection, $query);
нет. В чем проблема?