Question

For the life of me I cannot figure out why my update statement will not update the table row but instead it creates a new row. I have an ID column that is the unique identifier and is auto_increment, I am just not sure if you can update an auto_incremented data set the way i am trying to.

I have a form that is echo’ing data from the database into the fields and then am using it to edit the fields and update them.

The code:

<?php
$EntryID = $_GET['Eid'];
$IDlist = mysql_query("SELECT * FROM BD WHERE Id='$EntryID'");
$IDresults = mysql_fetch_array($IDlist);

$update_query = "UPDATE `BD` SET `Id` ='$IDresults['Id']',`EntryTitle` = '$MyTitle',`EntryDescription` = '$MyDescription',`Category` = '$MyCategory' WHERE `Id` ='$EntryID'";
mysql_query($update_query);

if (!mysql_query($sql,$con))
  {
  die('Error: ' . mysql_error());
  }
else{
header('location: /admin/bd-edit-entry.php?sub=1');
exit();
  }
mysql_close($con);
?>

Any help or advice would be a great.

Answer 1

SET `Id` ='$IDresults['Id']'

should be either:

SET `Id` ='$IDresults[Id]'

or

SET `Id` ='{$IDresults['Id']}'

If you turn on error reporting, you should get errors about a bad index.

Or you can leave this column out of the update entirely, since this column isn’t changing.