How to check if an UPDATE mysqli query is correctly executed?

Question

Here is my case:

$sql = \'UPDATE user SET password = ? WHERE username = ? AND password = ?\';
if($stmt->prepare($sql)) {
    $stmt->bind_param(\'sss\',         


        

Answer 1

You need to use the affected_rows function of the MySQL extension you are using. This will return 0 if the query failed because no rows matched, -1 if an error occurred, or a positive number showing the number of rows that were changed.

Answer 2

A query which updates no rows is NOT an error condition. It's simply a succesful query that didn't change anything. To see if an update actually did change anything, you have to use mysqli_affected_rows()

Answer 3

Try use mysqli_affected_rows() to get the number of affected rows.

Answer 4

 mysqli_query($link, "UPDATE Language SET Status=1 WHERE Percentage > 50");
 printf("Affected rows (UPDATE): %d\n", mysqli_affected_rows($link));

Try that.