The $_POST array

[Jørn Dahl-Stamnes]

I got the following code:

reset ($_POST);
while (list($key,$val) = each($_POST))
{
echo "$key => $val\n";
}

But this prints out nothing. If I replace the code above with:
print_r ($_POST);

I can see the content of the $_POST array. Why?

--
Jørn Dahl-Stamnes
http://www.dahl-stamnes.net/dahls/

[IWT]

Jørn Dahl-Stamnes wrote:

I got the following code:

reset ($_POST);
while (list($key,$val) = each($_POST))
{
echo "$key => $val\n";
}

But this prints out nothing. If I replace the code above with:
print_r ($_POST);

I can see the content of the $_POST array. Why?

Try this:

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

[Jørn Dahl-Stamnes]

IWT wrote:

Jørn Dahl-Stamnes wrote:

I got the following code:

reset ($_POST);
while (list($key,$val) = each($_POST))
{
echo "$key => $val\n";
}

But this prints out nothing. If I replace the code above with:
print_r ($_POST);

I can see the content of the $_POST array. Why?

Try this:

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

Tried that too. Still no output...

--
Jørn Dahl-Stamnes
http://www.dahl-stamnes.net/dahls/

[Ewoud Dronkert]

Jørn Dahl-Stamnes wrote:

I got the following code:

reset ($_POST);
while (list($key,$val) = each($_POST))
{
echo "$key => $val\n";
}

But this prints out nothing. If I replace the code above with:
print_r ($_POST);

I can see the content of the $_POST array. Why?

Can't think of anything but:
- it's a bug in your php version...,
- echo is buffered and/or redirected and print_r is not,
- "list" or "each" are redefined as constants earlier,
- the contents of $key or $val are preventing output.

If the last point, try using htmlspecialchars().

--
E. Dronkert

[Jørn Dahl-Stamnes]

Ewoud Dronkert wrote:

Jørn Dahl-Stamnes wrote:

I got the following code:

reset ($_POST);
while (list($key,$val) = each($_POST))
{
echo "$key => $val\n";
}

But this prints out nothing. If I replace the code above with:
print_r ($_POST);

I can see the content of the $_POST array. Why?

Can't think of anything but:
- it's a bug in your php version...,
- echo is buffered and/or redirected and print_r is not,
- "list" or "each" are redefined as constants earlier,
- the contents of $key or $val are preventing output.

Seems like a bug to me. I tried this:

$text = print_r ($_POST,true);
echo $text;

and it worked OK. So I'm able to get around this possible bug.

--
Jørn Dahl-Stamnes
http://www.dahl-stamnes.net/dahls/

[Justin Koivisto]

Jørn Dahl-Stamnes wrote:

I got the following code:

reset ($_POST);
while (list($key,$val) = each($_POST))
{
echo "$key => $val\n";
}

But this prints out nothing. If I replace the code above with:
print_r ($_POST);

I can see the content of the $_POST array. Why?

Try this:

$ar=$_POST;
while (list($key,$val) = each($ar))
{
echo "$key => $val\n";
}

IIRC, older PHP versions had a problem with using the each function (and
the foreach) with any of the superglobal arrays...

--
Justin Koivisto, ZCE - ju****@koivi.com
http://koivi.com

[Ewoud Dronkert]

Justin Koivisto wrote:

IIRC, older PHP versions had a problem with using the each function (and
the foreach) with any of the superglobal arrays...

I thought that might be the case, but couldn't find anything with some
quick searches earlier (googled "php list each superglobal" and looked at
the comments at php.net/each).

--
E. Dronkert