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Database Database problems or need to ask a question? maybe something to do with sql injections or a database software question. Database topics cover MySQL, PostgreSQL, Oracle, SQL Server or anything else related to databases.

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Old 07-01-2007, 9:30 PM   #1
Garry Jones
 
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Default Reuse value in another file?

When processing a form I am reading in a value to a mysql database. I then
redirect the user to a "thank you" page with Header. What I would like is to
remind the user the value he has keyed in.

In the following can I store $inx01 and echo its value in thankyou.php?

<?php
mysql_connect(" Codes Removed ") or die(mysql_error());
mysql_select_db(" Database Name removed ") or die(mysql_error());

$inx01=$_POST['fardvagonf'];

mysql_query("INSERT INTO table1 VALUES ('$inx01')");
echo mysql_error();

mysql_close();

Header("Location: http://www.mydomain.com/thankyou.php");
exit;

?>

Garry Jones
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Old 07-01-2007, 9:31 PM   #2
Jerry Stuckle
 
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Default Reuse value in another file?

Garry Jones wrote:
> When processing a form I am reading in a value to a mysql database. I then
> redirect the user to a "thank you" page with Header. What I would like is to
> remind the user the value he has keyed in.
>
> In the following can I store $inx01 and echo its value in thankyou.php?
>
> <?php
> mysql_connect(" Codes Removed ") or die(mysql_error());
> mysql_select_db(" Database Name removed ") or die(mysql_error());
>
> $inx01=$_POST['fardvagonf'];
>
> mysql_query("INSERT INTO table1 VALUES ('$inx01')");
> echo mysql_error();
>
> mysql_close();
>
> Header("Location: http://www.mydomain.com/thankyou.php");
> exit;
>
> ?>
>
> Garry Jones
> Sweden
>
>


Garry,

You can, but you'll have problems. First of all, you are inserting values into
the table, but not deleting them. Which will be the correct value (remember -
database entries are not ordered).

Even if you delete the entry from the table in your second page, what happens
when two people hit the submit button at the same time? Requests are not
necessarily processed in order - in fact one request isn't necessarily completed
before the next one starts. One user could get the other user's value, and if
you delete the value in your second page, one user may get an error because the
value isn't there.

A better way to store it would be to use sessions.


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JDS Computer Training Corp.
jstucklex@attglobal.net
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