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Re: test if $_POST variable is set [message #175832 is a reply to message #175831]

Sat, 29 October 2011 08:38

The Natural Philosoph
Messages: 993
Registered: September 2010

Karma:

Senior Member

cerr wrote:
> Hi There,
>
> I have a form with various checkboxes, they got names i have from a db
> to identify them.
> Now I would like to check what has been posted by the form. For that I
> would like to read all the field names from the db and check if they
> have been set something like this:
>
> $result = mysql_query("SELECT * FROM specialty");
> while($row = mysql_fetch_array($result)) {
> if (isset($_POST[$row['name']])) {
> var_dump($POST);
> session_unset();
> }
>
> But this doesn't seem to work the way I expected it to? I.e. I would
> liek to check if $_POST['MyCheckbox'] is set now but MyCheckbox is a
> name from the database. How do I do this best, the easiest way?
>
> Thanks,
> Ron
To extract column names from the database is non trivial.

I woudl suggets another approach.

Like set up an array of mysql field names and use that to both do the
select of the data, and to scan through to see if it exists

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[Message index]

		test if $_POST variable is set By: cerr on Sat, 29 October 2011 05:40
		Re: test if $_POST variable is set By: The Natural Philosoph on Sat, 29 October 2011 08:38
		Re: test if $_POST variable is set By: Richard Damon on Sat, 29 October 2011 13:04
		Re: test if $_POST variable is set By: Denis McMahon on Sat, 29 October 2011 13:16
		Re: test if $_POST variable is set By: Denis McMahon on Sat, 29 October 2011 13:09
		Re: test if $_POST variable is set By: Jerry Stuckle on Sat, 29 October 2011 13:26
		Re: test if $_POST variable is set By: cerr on Sat, 29 October 2011 18:39

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