Question

这是我的代码：

$dsn = "dbinstancename.c5twsfnt9pph.us-east-1.rds.amazonaws.com";
$port = "3306";
$db = "mysql";
$username = "username";
$password = "password";
$sourcetable = "test";

//initialize the connection
$link = mysqli_connect($dsn, $username, $password, $db, $port);

if ($link->connect_error){

        echo "Connection Failed";

        }

if(mysqli_connect_error()){
        echo 'MySQL Error: ' . mysqli_connect_error();
}

if(mysqli_select_db($link, $db)){
        echo 'connected successfully';
}

//set initial source id to import from
$sourceid = "1";

// get the first source url and name
$query = "SELECT * FROM $sourcetable WHERE id = $sourceid;";
//echo $query;

$result = mysqli_query($link, $query);

if($result === FALSE) {
        echo "query failed";
        echo mysqli_error($link);

}else{
        while ($row = mysqli_fetch_assoc($result)) {
                echo $row['name'];
                echo $row['url'];
        }
}

//echo "finished";

?>

问题是表测试确实存在并包含数据。测试表在数据库mysql中。

如果我更改了数据库的值，我会收到一个无法连接的错误（即使是mysql旁边的其他已知数据库）。

当这个程序运行时输出是“连接成功，查询失败，表'mysql.test'不存在”

非常感谢任何帮助。这是运行mariadb的AWS RDS实例，PHP是从EC2微实例运行的。

编辑：这是证明表存在的mysql字符串：

MariaDB [(none)]> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
MariaDB [mysql]> show tables;
+---------------------------+
| Tables_in_mysql           |
+---------------------------+
| column_stats              |
| columns_priv              |
| db                        |
| event                     |
| func                      |
| general_log               |
| gtid_slave_pos            |
| help_category             |
| help_keyword              |
| help_relation             |
| help_topic                |
| host                      |
| index_stats               |
| innodb_index_stats        |
| innodb_table_stats        |
| plugin                    |
| proc                      |
| procs_priv                |
| proxies_priv              |
| roles_mapping             |
| servers                   |
| slow_log                  |
| table_stats               |
| tables_priv               |
| test                      |
| time_zone                 |
| time_zone_leap_second     |
| time_zone_name            |
| time_zone_transition      |
| time_zone_transition_type |
| user                      |
+---------------------------+
31 rows in set (0.00 sec)

MariaDB [mysql]> select * from test;
+----+--------+------------+
| id | name   | url        |
+----+--------+------------+
|  1 | banana | banana.com |
+----+--------+------------+
1 row in set (0.00 sec)

mysqli_query（）为已知表返回“表不存在” - 权限问题？

0 个答案: