Multiple inserts in one sybase_query issue

I'm running PHP 3 (and PHP 4 on another server) with Sybase 11.9.2 on the database server. I have tried in a number or variations to insert a series of updates and inserts in the same sybase_query. I build a $query consisting of around 15-20 inserts and updates and call the sybase_query function, everything works fine and it writes to the database as expected however none of the sybase_querys after this point are recorded. For example when I create this string: $query = "Declare @nonuser_signup_id numeric(10,0)\n"; $query .= "Insert into nonuser_signup (email, firstname, lastname, gender) values ('$email', '$firstname', '$lastname', '$gender')\n"; $query .= "Select @nonuser_signup_id = @@identity\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Free_Stuff, 5, getdate())\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Contests, 5, getdate())\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Surveys, 5, getdate())\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Shopping, 5, getdate())\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Games, 5, getdate())\n"; $query .= "Insert into user_optin (user_id,optin_type_id,promotion_id) values ($user_id, 10, 5)\n"; $result = sybase_query($query, $db); Everything works fine, however when its broken up like this: $query = "Declare @nonuser_signup_id numeric(10,0)\n"; $query .= "Insert into nonuser_signup (email, firstname, lastname, gender) values ('$email', '$firstname', '$lastname', '$gender')\n"; $query .= "Select @nonuser_signup_id = @@identity\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Free_Stuff, 5, getdate())\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Contests, 5, getdate())\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Surveys, 5, getdate())\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Shopping, 5, getdate())\n"; $query .= "Insert into nonuser_optin (nonuser_signup_id, optin_type_id, promotion_id, signup_date) values (@nonuser_signup_id, $Games, 5, getdate())\n"; $result = sybase_query($query, $db); $query = ''; $query .= "Insert into user_optin (user_id,optin_type_id,promotion_id) values ($user_id, 10, 5)\n"; $result = sybase_query($query, $db); The last insert doesn't work. Is this a bug in PHP or am I overlooking something? Logically it seems that it should function the same in both cases. I should also note that when I break that up into a series of completely independant queries it works fine too, I can run a series of single inserts each with their own sybase_query and they all insert fine. However as you can see in the case above I am using a @@identity which makes splitting these up into different queries impossible. Thnaks in advance for any aid. Ben