当我尝试通过PHP创建数据库并设置用户权限时，MySQL语法错误

Question

This is the first time that i will ask a question in this forum.

I am working on a php project in which i have to -through php- create a database and insert some empty tables.

The issue here is that i always get an error message regarding syntax when i try to add privileges to the superuser (for some reason, if i don't, an error message states that i don't have permition to access the database).

Here is the code for creating the database and assigning privileges:

$sql = "CREATE DATABASE IF NOT EXISTS `database` DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci; "; 

$sql .= "GRANT SELECT database.* TO 'superuser'@'localhost' ";

$sql .= "GRANT ALL ON database." TO 'superuser'@'localhost' IDENTIFIED BY 'password'; ";

$sql .= "FLUSH PRIVILEGES"; 

Can you tell me what did wrong? Thanks in advance!

Answer 1

You need to end each of your SQL statements with a semi colon ; , it is missing after the first GRANT . The second GRANT uses database." and should be database.* , should also be surrounded by backticks as "database" is a reserved word. That said, the first GRANT can be omitted as the it will be included with GRANT ALL .

$sql = "CREATE DATABASE IF NOT EXISTS `database` DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci; ";
$sql .= "GRANT ALL ON `database`.* TO 'superuser'@'localhost' IDENTIFIED BY 'password'; ";
$sql .= "FLUSH PRIVILEGES;"; 

You can also use a HEREDOC format to make it easier to read

$sql = <<<SQL
  CREATE DATABASE IF NOT EXISTS `database` DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci;
  GRANT ALL ON `database`.* TO 'superuser'@'localhost' IDENTIFIED BY 'password';
  FLUSH PRIVILEGES; 
SQL;