Question

I am confronted to a problem that is driving me crazy. I really do not get it. Here below a very simple table creation. I would like to use a variable to name the table. And it is not working!!!!! If I replace the variable by a “handwriten” name, it works… What the…. Thank you in advance for your replies. Cheers. Marc. In case I did not mentionne it, it is driving me crazy.

$processid = mysql_thread_id();

mysql_select_db("mydb", $con);
$sql = 'CREATE TABLE '.$processid.'
(
bat_file varchar(255), 
bat_file_date datetime, 
bat_file_misc varchar(255), 
bat_titre varchar(255), 
bat_lien varchar(255)
)';

mysql_query($sql,$con);

Answer 1

The return value of mysql_thread_id is not a valid name for a table unless you quote it:

Certain objects within MySQL, including database, table, index,
column, alias, view, stored procedure, partition, and other object
names are known as identifiers.

 ...

Identifiers may begin with a digit but unless quoted may not consist
solely of digits.

Since the quote character is the backtick, it should work if you change it to

$sql = 'CREATE TABLE `'.$processid.'` ... ';

I don’t know why you want to create a table named after a mysql_thread_id (it sounds really fishy), but even if there is a perfectly good reason it might be a good idea to add a prefix in front so that you don’t have to quote it each time.