Question

How do i allow duplicate entries in my php file from this file … i have the html file which is a form to track radios for a company. I have text boxes and radio buttons and all the fields need to be able to have duplicate entries except for the serial number field. i keep getting and error saying i cannot have duplicate entries.

<?php
    $con = mysql_connect("localhost","Jason","");
    if (!$con)
    {
        die('Could not connect: ' . mysql_error());
    }

    mysql_select_db("test", $con);

    $sql="INSERT INTO test (
        firstname,
        lastname, 
        department,
        radiomodel,
        serialnumber,
        issuedate
    )
    VALUES(
        '$_POST[firstname]',
        '$_POST[lastname]',
        '$_POST[department]',
        '$_POST[radiomodel]',
        '$_POST[serialnumber]',
        '$_POST[issuedate]'
     )";

     if (!mysql_query($sql,$con))
     {
         die('Error: ' . mysql_error());
     }

     echo "1 record added";

     mysql_close($con);
     header( "refresh:150;url=testinput.php" );
?> 

Answer 1

Your serialnumber is a primary key and thus you can not have duplicate values.

You should remove the primary key from the serialnumber field and add in a new id column to put the primary key on this or use multiple columns together as the key, for example use firstname, lastname and date and serialnumber as the key.

Really you should split this off into multiple tables though.