How to redirect after form submit?

[deko]

I have a basic feedback form with a submit button.

After the "send" button is clicked, I want the user to be redirected to a
different page that says "Your message has been sent."

How do I do this?

I've tried using:

header("Locatio n:http://www.mysite.com/send-confirm.php");

But here's the error I get:

Warning: Cannot add header information - headers already sent by (output started
at ...

Here's the code:

<form action= "
<?php
$message = trim($_REQUEST['message']);
$email_address = trim($_REQUEST['email_address']);
if (empty($message ) || empty($email_ad dress))
{
$valid_message = false;
}
else
{
mail( "my email address", "feedback form", $message, "from:
$email_address" );
$valid_message = true;
}
?>"
<input name="email_add ress" type="text" size="30"/><br />
<textarea name="message" rows="12" cols="23"></textarea><br />
<input type="submit" value="Send">
</form>
<?php
if ($valid_message )
{
echo "valid message";
header("Locatio n:http://www.mysite.com/send-confirm.php");
exit();
}
else
{
echo "invalid message";
}
?>

How do I redirect after the user clicks the send button?

Thanks in advance.

[Paul Lautman]

deko wrote:

I have a basic feedback form with a submit button.

After the "send" button is clicked, I want the user to be redirected
to a different page that says "Your message has been sent."

How do I do this?

I've tried using:

header("Locatio n:http://www.mysite.com/send-confirm.php");

But here's the error I get:

Warning: Cannot add header information - headers already sent by
(output started at ...

Here's the code:

<form action= "
<?php
$message = trim($_REQUEST['message']);
$email_address = trim($_REQUEST['email_address']);
if (empty($message ) || empty($email_ad dress))
{
$valid_message = false;
}
else
{
mail( "my email address", "feedback form", $message, "from:
$email_address" );
$valid_message = true;
}

"

<input name="email_add ress" type="text" size="30"/><br />
<textarea name="message" rows="12" cols="23"></textarea><br />
<input type="submit" value="Send">
</form>
<?php
if ($valid_message )
{
echo "valid message";
header("Locatio n:http://www.mysite.com/send-confirm.php");
exit();
}
else
{
echo "invalid message";
}

How do I redirect after the user clicks the send button?

Thanks in advance.

Put all the stuff that does output ("<form...", "<input..." ) after the
header() call.

[deko]

> Put all the stuff that does output ("<form...", "<input..." ) after the

header() call.

Okay, here's the header call:

<?php if ($valid_message )
{
header("Locatio n:http://www.mysite.com/send-confirm.php");
exit();
}
?>

And here's the form:

<form action="
<?php
$message = trim($_REQUEST['message']);
$email_address = trim($_REQUEST['email_address']);
if (empty($message ) || empty($email_ad dress))
{
$valid_message = false;
}
else
{
mail( "my email address", "feedback form", $message, "from:
$email_address" );
$valid_message = true;
}
?>" method="POST" name="feedback" style="font-size:12px" >
<input name="email_add ress" type="text" size="30"/><br />
<textarea name="message" rows="12" cols="23"></textarea><br />
<input type="submit" value="Send">
</form>

I no longer get the error, but the page does not redirect.

I'm sure I must be missing something simple...

[deko]

I tried this:

<?php

$valid_message = true;

if ($valid_message )
{
header("Locatio n:http://bubba/send-confirm.php");
exit();
}
?>

And still got this:

Warning: Cannot add header information - headers already sent by (output started
....

Can I redirect another way?

The headers, probably, are being sent in the header section of the page.

Can this block of code be put above the DOCTYPE statement?

But then, how would the value of the $valid_message variable get set?

[Paul Lautman]

You must ensure that there is no blank space or empty lines, outside of the
<?php ?> braces. Any such empty space will be sent and will cause headers to
already be sent.

Make sure that <?php is the very first thing on the very first line of the
file.

deko wrote:

I tried this:

<?php

$valid_message = true;

if ($valid_message )
{
header("Locatio n:http://bubba/send-confirm.php");
exit();
}

And still got this:

Warning: Cannot add header information - headers already sent by
(output started ...

Can I redirect another way?

The headers, probably, are being sent in the header section of the
page.
Can this block of code be put above the DOCTYPE statement?

But then, how would the value of the $valid_message variable get set?

[deko]

> You must ensure that there is no blank space or empty lines, outside of the

<?php ?> braces. Any such empty space will be sent and will cause headers to
already be sent.

Make sure that <?php is the very first thing on the very first line of the
file.

but what about all the html?

the page looks like this:

DOCTYPE ...
<html>
<head>
....
javascript...
</head>
<body>
<html>
all kinds of html...
<form>
<?php
....
?>
....
</form>
more html...
</html>
</body>

I want the redirect to happen only if the form is filled out correctly, so the
redirect should, I think, go just after the form code.

[David Haynes]

deko wrote:

You must ensure that there is no blank space or empty lines, outside
of the <?php ?> braces. Any such empty space will be sent and will
cause headers to already be sent.

Make sure that <?php is the very first thing on the very first line of
the file.

but what about all the html?

the page looks like this:

DOCTYPE ...
<html>
<head>
...
javascript...
</head>
<body>
<html>
all kinds of html...
<form>
<?php
...
?>
...
</form>
more html...
</html>
</body>

I want the redirect to happen only if the form is filled out correctly,
so the redirect should, I think, go just after the form code.

The form processing should be the *first* thing in the file.
Something like:

DOCTYPE ...
<?php
if( isset($_POST['foo'] ) {
// do form processing

if( $isValid ) {
header();
exit;
}
}
?>
<form action="..." method="POST">
....
<input type="text" name="foo" size="10" maxlength="255" >
<input type="submit">
</form>

-david-

[Paul Lautman]

deko wrote:

You must ensure that there is no blank space or empty lines, outside
of the <?php ?> braces. Any such empty space will be sent and will
cause headers to already be sent.

Make sure that <?php is the very first thing on the very first line
of the file.
but what about all the html?

The html will be in the page that it is redirected to.

If you are redirecting there is no need to send any html for THIS page
because you are redirecting to a different page.


the page looks like this:

DOCTYPE ...
<html>
<head>
...
javascript...
</head>
<body>
<html>
all kinds of html...
<form>
<?php
...

...
</form>
more html...
</html>
</body>

I want the redirect to happen only if the form is filled out
correctly, so the redirect should, I think, go just after the form
code.

[deko]

> The form processing should be the *first* thing in the file.

Something like:

DOCTYPE ...
<?php
if( isset($_POST['foo'] ) {
// do form processing

if( $isValid ) {
header();
exit;
}
}
?>
<form action="..." method="POST">
...
<input type="text" name="foo" size="10" maxlength="255" >
<input type="submit">
</form>

Thanks, that helped. I am getting the correct redirect behavior now.

But I still have a couple of questions...

Here's how it looks now:

------------------------
<?php
$message = $_POST['message'];
$email = $_POST['email_address'];
if (!empty($messag e) && !empty($email))
{
header("Locatio n:http://bubba/send-confirm.php");
exit;
}
?>
DOCTYPE
<html>
....
....
<form action=<?php include "myscript.p hp" ?> method="POST">
<input name="email_add ress" type="text" size="10" maxlength="255" >
<textarea name'"message" rows="12" cols="22"> </textarea>
<input type="submit" value="Send">
</form>
....
....
</html>
--------------------------

Does my form look correct?

What form attributes are required (which are optional) - name, type, method... ?

Am I properly referencing "myscript.p hp"? Do I need the include statement?

Thanks again for you help!

[David Haynes]

deko wrote:

The form processing should be the *first* thing in the file.
Something like:

DOCTYPE ...
<?php
if( isset($_POST['foo'] ) {
// do form processing

if( $isValid ) {
header();
exit;
}
}
?>
<form action="..." method="POST">
...
<input type="text" name="foo" size="10" maxlength="255" >
<input type="submit">
</form>

Thanks, that helped. I am getting the correct redirect behavior now.

But I still have a couple of questions...

Here's how it looks now:

------------------------
<?php
$message = $_POST['message'];
$email = $_POST['email_address'];
if (!empty($messag e) && !empty($email))
{
header("Locatio n:http://bubba/send-confirm.php");
exit;
}
?>
DOCTYPE
<html>
...
...
<form action=<?php include "myscript.p hp" ?> method="POST">
<input name="email_add ress" type="text" size="10" maxlength="255" >
<textarea name'"message" rows="12" cols="22"> </textarea>
<input type="submit" value="Send">
</form>
...
...
</html>
--------------------------

Does my form look correct?

What form attributes are required (which are optional) - name, type,
method... ?

Am I properly referencing "myscript.p hp"? Do I need the include statement?

Thanks again for you help!

Assuming that all this is saved in a file named 'myscript.php', then
your form should look like this:

<form action="myscrip t.php" method="POST">
<input type="text" name="email_add ress" value="<?php echo
$_POST['email_address'];?>" size="10" maxlength="255" >
<textarea name="message" rows="12" cols="22">
<?php echo $_POST['message'];?>
</textarea>
<input type="submit" value="Send">
</form>

The <?php echo bits cause the form to redisplay what was entered since
the only times the user will see the form are a) if this is the first
time or b) if there was some error in processing the values supplied to
the form.

The include statement is used to read in code from another file and
merge it into the current image and then interpret it. In a form action,
you are just specifying the name of the php file that the browser should
call when the submit action of the form is triggered.

The typical minimum set of attributes on <input> tags are type and name.

-david-