------ Forwarded Message
> From: David Shugarts <[EMAIL PROTECTED]>
> Date: Thu, 26 Jun 2003 18:53:53 -0400
> Subject: Re: [PHP-DB] error checking question
> Hi, David--
> The question you are asking belongs to the topic or concept called "form
> validation" and you will see lots of hits about it on a Google search. I have
> been looking at the same issue and I am impressed with one solution,
> http://www.x-code.com/vdaemon_web_form_validation.php. However, I am
> interested in what other people might think.
> With the help of this List, I have had some success in validation of one or
> two variables in a form, but this solution, vdaemon, represents an attempt to
> cover the complete spectrum of the variables people most often want to
> validate. I feel it may be on the right track (even though the one I wish to
> validate isn't covered).
> --Dave Shugarts
>> Hello everyone,
>> I've been experimenting with checking for errors in data inserted into a
>> table
>> using an html form.  The main page displays the result of a  "select  *  from
>> the_table" at the top of the page, with the form for inserting the data
>> beneath.
>> The SQL for the insert occurs on a different page, with redirection back to
>> the
>> main page using the header() function ( as I've learned to do from reading
>> this
>> list ). This all works well. The inserted data shows up in the table, and
>> there
>> are no surprises when refreshing, etc... I have also implemented some error
>> checking on the client side using JavaScript, and this is also working well.
>> What I would like to do is somehow have a redundant error check on the server
>> side and then display an error message above the form on the main page should
>> fields be left blank or forbidden characters entered. Since I have access to
>> the
>> $_POST['variables'] on the form processing page, I've already written some
>> code
>> to detect the presence of error characters, etc...and no query is performed
>> if
>> there is an error.  But how do I pass a "flag" variable back to the main page
>> to
>> echo an appropriate message above the form?
>> Advice or suggestions greatly appreciated.
>> David

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