Help with $_POST variables. Reading their names.

I have a dynamic form that that creates input variables named different
things based on what it reads from the database.

So, for example, it may create three fields, named ex12, ex23, and ex45
respectively, and send those fields and their values via POST to a PHP
page.

So these would be sent basically:
$_POST['ex12'] which may equal "cow".
$_POST['ex23'] which may equal "cat".
$_POST['ex45'] which may equal "dog".

Now, I can easily count how many variables are sent using count($_POST)
and know that 3 variables were sent. The question is, how to I
determine what the names of the variables are? How do I determine if
sent were ex12, ex23, and ex45 as opposed to ex4, ex25, and ex65?


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Sugapablo <russREMOVE@sugapablo.com> wrote:

> I have a dynamic form that that creates input variables named
> different things based on what it reads from the database.
>
> So, for example, it may create three fields, named ex12, ex23, and
> ex45 respectively, and send those fields and their values via POST to
> a PHP page.
>
> So these would be sent basically:
> $_POST['ex12'] which may equal "cow".
> $_POST['ex23'] which may equal "cat".
> $_POST['ex45'] which may equal "dog".
>
> Now, I can easily count how many variables are sent using
> count($_POST) and know that 3 variables were sent. The question is,
> how to I determine what the names of the variables are? How do I
> determine if sent were ex12, ex23, and ex45 as opposed to ex4, ex25,
> and ex65?

foreach($_POST as $key => $value){
echo $key.": ".$value;
}

HTH;
JOn

Sugapablo wrote:
> I have a dynamic form that that creates input variables named different
> things based on what it reads from the database.
>
> So, for example, it may create three fields, named ex12, ex23, and ex45
> respectively, and send those fields and their values via POST to a PHP
> page.
>
> So these would be sent basically:
> $_POST['ex12'] which may equal "cow".
> $_POST['ex23'] which may equal "cat".
> $_POST['ex45'] which may equal "dog".
>
> Now, I can easily count how many variables are sent using count($_POST)
> and know that 3 variables were sent. The question is, how to I
> determine what the names of the variables are? How do I determine if
> sent were ex12, ex23, and ex45 as opposed to ex4, ex25, and ex65?

First thing that comes to mind is:

<?php
foreach ($_POST as $k=>$v) {
// $k is 'ex12', 'ex23', ...
// $v is 'cow', 'dog', ...
}
?>

HTH
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Sugapablo, doing a poor impression of Quincy, said:
>
> determine what the names of the variables are? How do I determine if
> sent were ex12, ex23, and ex45 as opposed to ex4, ex25, and ex65?

one way would be to use a foreach loop:

foreach($_POST as $key => $value)
echo "variable $key had value $value\n";

/joe
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In article <Xns943FB35A7FAD7jonjonuxcouk@130.133.1.4>, Jon Kraft wrote:
>
> foreach($_POST as $key => $value){
> echo $key.": ".$value;
> }

Thank you (to each who answered). :)

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[ Sugapablo ]
[ http://www.sugapablo.com <--music ]
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