What potential issue could cause the error "mysql_fetch_object(): supplied argument is not a valid MySQL result resource" in PHP code?

The error "mysql_fetch_object(): supplied argument is not a valid MySQL result resource" typically occurs when the query executed does not return a valid result set. This can happen due to issues with the SQL query syntax, database connection problems, or errors in handling the result resource. To solve this issue, you should ensure that the SQL query is correct, the database connection is established successfully, and the result resource is properly handled before fetching data.

// Assuming $connection is the database connection object and $query is the SQL query
$result = mysqli_query($connection, $query);

if($result){
    while($row = mysqli_fetch_object($result)){
        // Process the fetched data
    }
} else {
    echo "Error executing query: " . mysqli_error($connection);
}