为什么我在php中收到“拒绝用户访问”错误？

Question

I am running this code:

include '../includes/connection.php';
$conn = dbConnect('backup');

$tableName  = 'orders';
$backupFile = '../backup/db-backup(' . $date . ').sql';
$query      = "SELECT * INTO OUTFILE '$backupFile' FROM $tableName";
$result = $conn->query($query) or die(mysqli_error($conn));

I am getting this error:

Access denied for user 'ideapale_amadmin'@'localhost' (using password: YES)

I know the password and username is correct, and I have tested connecting to the database without running the query and that works fine. Also, the user I am currently using has all privileges. Therefore, I think there is something wrong with my sql statement.

Why am I getting the 'access denied for user' error?

Answer 1

Sorry to say it, but obviously the password is not correct. Either that or you've got incorrect privileges.

Answer 2

already said this in my comment, but i think this is the solution:

"FILE"-permissions are set global, nor for a specific database - i think you have overlooked that, so the user has no permissions for ... INTO OUTFILE (and, also, not for LOAD DATA INFILE... )

EDIT: the query to grant this privileges (out of my head, not tested):

GRANT FILE ON *.* TO 'myuser'@'localhost' IDENTIFIED BY 'mypasswd';

EDIT2: to set this in phpMyAdmin, just click on Server: localhost (which should be the start-page when you open phpMyAdmin) then click on Privileges , select your user and add the tick or FILE in the Data-section (so, simply don't scroll down and select a specific database)

EDIT3: if you use method 1, make sure you run the grant-statement as root - a user can't grant privileges for himself (if he could, all this permission-stuff would be senseless)