PHP, MySQL, and temporary tables

Php novice.

1.Is there anything wrong with this PHP & MySQL code?

include_once "db_login.php" ;

$sql = "DROP TEMPORARY TABLE IF EXISTS temp_sap_id_select" ;
mysql_query ( $sql ) or ( "Error " . mysql_error () ) ;

$sql = " CREATE TEMPORARY TABLE temp_sap_id_select 
               (
                 `current_page` INT NOT NULL,
                 `total_pages` INT NOT NULL,
                 `select_date` DATE NOT NULL,
                 `select_schcode` CHAR(6) NOT NULL,
                 `select_user` CHAR(30) NOT NULL,
                 `select_id` CHAR(9) NOT NULL
               ) " ;
mysql_query ( $sql ) or ( "Error " . mysql_error () ) ;

2.Admittedly, I'm a dull boy, but I'll ask anyway: If I'm using a MySQL GUI and have open the target database, will it be aware of the above 开发者_运维百科temporary table created by PHP/MySQL (IF the temporary table is properly created)?

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Temporary tables are only visible to the connection used to create them, and they disappear once the connection is closed.