Description:
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Hi
I have problem when inserting data to my MS Access DB.
It gives error

I'm using odbc_exec () function.

Can anyone help me please!
I have to submit my project on saturday!


Reproduce code:
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<?php
$db = odbc_connect('ezLearning', 'peyman', 'attarzadeh') or die('Could Not Connect to ODBC Database!'); 
require_once('test2_complete.php'); 
$a=$_POST["username"];
$b=$_POST["password"];
$q = "INSERT INTO [t1]([username],[password]) VALUES ($a,$b);";
odbc_exec ($db,$q);
odbc_close($db);
?> 

Expected result:
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the result should be anything you entered for the values $a and $b.

Actual result:
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Warning: odbc_exec() [function.odbc-exec]: SQL error: [Microsoft][ODBC Microsoft Access Driver] Too few parameters. Expected 2., SQL state 07001 in SQLExecDirect in c:\Inetpub\wwwroot\ezLearning\test2_complete.php on line 14