Using Session Variables To Insert Data To MYSQL Database?

I am having problems getting PHP to insert data into a MYSQL data base. I am using the following variations of syntax.

mysql_query("INSERT INTO table member VALUES ('$var1', '$var2', '$var3')")
or die("couldn't add new user");

and also with session variables as well

mysql_query("INSERT INTO table member VALUES ('$_SESSION[$var1]', '$_SESSION[$var2], '$_SESSION[$var3]')")or die("couldn't add new user");

i have put all these through a print statement to make sure the variables ae set and they print in the same block of code so i have no idea what i am doing wrong.?


Insert Query Doesn't Insert Data To Mysql Database Table?

i have a recipe table and ingredient table the primary key of both tables are auto increament and primary key of recipe is foreign key in ingredient. i post data from html to php.Note that my ingredient textboxes are generated dynamically and successfully post the data to php script. posted data is correct when i insert this data to table my query working fine but data is not added to mysql table. my code and output is

$sql = "insert into recipe (rec_id, Name, Overview,category, Time, Image) values ('', '$name','$overview','$category','$time','$TARGET_PATH')";
$result = mysql_query($sql) or die ("Could not insert data into DB: " . mysql_error());
$rec_id = mysql_insert_id();


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//Insert data into database
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I am wondering where I could put the WHERE clause. It needs to be something like this

WHERE approvedQuestions status = TRUE

I am hoping I'm explaining myself clearly. Since I am not displaying data I do not believe I need to be using the UNION but I could be wrong.

EDIT: Each question has a unique ID associated with it. The unqiue ID is also present in the answer table for association purposes. Only thing is all the relationships are being done PHP wise and not MySQL wise. What would be the best way to assign the unique questionID to the answer table?

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The sever I use had Glabal variables turned on, dont know if thats an issue in this case.

Heres the code on the check user page:

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I basically made a registration form and need to insert the data into the database.

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I created a db connection file and included it on registration page but not sure if i first havew to query database then insert data etc, i am a little confused.

Before any data can be inserted it has to check if the email address and username already exist. Could someone plese give me the info on what order i do it?

here is what needs being added to database.

username, first_name, last_name, email, password

before it inserts the users data it needs to check to make sure the username and email does or does nto exist.

Here is my db connection file code in case it helps, this is included using the php include in the registration page. All i need help in how i got about checkning if username and email exists or not and if all ok put info in db or give an error to say it already exists.


// Database Connection Details
$host = "localhost"; // Usually Local Host
$user = "none"; // Database Username
$pass = "none"; // Database Password
$database = "usernone"; // Database Name
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PHP Code:
* File         : session.lib..php
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