forms handling

trojan_ted

ive created a form with php to update a database, the question i have is how can i get that page to load another page once its processed the form.

I can't use header(); as this doesnt work.

Is this something that can be achieved with PHP? or am i going to be required to tinker with Javascript :rolleyes:

Any ideas, suggestions greatly appreciated

planetsim

i dont understand what you mean

are you talking about the file to goto just after the form
if so you can use

action='' in the form feild

trojan_ted

What i mean is i have a php page with a form on it. for example

form.php

this displays the form and processes it. the form action="form.php"

what i need to do is similar to what happens when you post on this forum. fill out form->process->goto another page.

so.....

form.php - displays the form
form.php - processes the the form

on completion load

next.php - another page.

hope this makes sense.

suntra

If you can't use header(), you must use HTML and JavaScript...

JavaScript :
<SCRIPT LANGUAGE="JavaScript">

</SCRIPT>

And with HTML

And don't forget to put a link.. some people don't have JavaScript activated and don't allow "Refresh meta tags".

cgraz

Just curious: why isn't header working? Is it just not redirecting? Are you getting a headers already sent error?

This IS a PHP forum. If you wanna post your code, i'm sure someone can help you get header() working (atleast I'd hope so).

Cgraz

cschotch

This is a simple Script I use at my website for news....well I USED to use I have done some more work on it. But you'll get the idea.....

<?php
print_r($_POST);
if($Content) {
mysql_connect('localhost', 'username', 'password');
mysql_select_db('table');
mysql_query("INSERT INTO News VALUES ('$Content', '$PostedBy', NOW(), '$Title', '')");
echo '<br />';
echo 'This is what News was added';
echo '<br>';
echo '<a href="news_add.php">Click Here for the next page</a>';
} else {
?>

<form method="post" action="news_add.php">
    Title:<br>
    <input type="text" name="Title"><br><br>
    Posted By:<br>
    <input type="text" name="PostedBy"><br><br>
    Content:<br> 
    <textarea name="Content" cols="40" rows="40"></text><br/> 
    <input type="submit" value="Add News"> 
</form> 
<?php
}
?>

Now admittedly this doesnt go straight back but I did it this way for some sort of error checking. When I started this was the first script I did, so it is a little easy for some of you masters out there.....Just a idea though.

trojan_ted

thanks for the suggestions, i'll give them a try shortly,

in answer to cgraz - according to PHP language refrences, it needs to be the very first line of code before any HTML or PHP code. The page already displays the form, and processes it so i can't put header() in as the first line as it would never process or display the form.

trojan_ted

<?
if(!isset($username)&&!isset($password))
{

?>
<form name="login" method="post" action="login.php">
<table width="90%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td><div align="left" class="yeltext">Username : </div></td>
<td><input name="username" class="formfield" type="text" id="username"></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td><div align="left" class="yeltext">Password : </div></td>
<td><input name="password" class="formfield" type="password" id="password"></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td colspan="2"><div align="center">
<input type="submit" name="Submit" value="Login">
</div></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
</table>
</form>
<?
}
else
{
session_start();
$password = crypt($password, 'mp');
$loginq = "select count(*) from login where
login_name_txt = '$username' and login_pwd_txt = '$password' and login_active_int = '1'";
$loginr = mysql_query($loginq);
$count = mysql_result($loginr, 0, 0);
if ($count > 0)
{
echo "<div class=yeltext>\nLogin Successful</div>\n";
?>
<a href="./index2.php?<?=SID?>">Click to Complete Login</a>
<?
}
else
{
echo "login failed";
}
}
?>

That is essentially, although slightly shortened, the page form.php. What i need to do if possible is instead of having the line :

<a href="./index2.php?<?=SID?>">Click to Complete Login</a>

for the user to have to manually load the next page, for it to do this automatically. Header() returns headers already sent error, and a meta refresh will surely refresh the page regardless on whether the form has been processed.

(my apologies if the code looks a little untidy, but its only a rough draft at present... honest)

cgraz

Posted by trojan_ted

in answer to cgraz - according to PHP language refrences, it needs to be the very first line of code before any HTML or PHP code. The page already displays the form, and processes it so i can't put header() in as the first line as it would never process or display the form.

That's not true. Have you actually read the php language references? You can call header as the very last line of your script, or even after PHP code. Read the description again: http://www.php.net/manual/en/function.header.php

From PHP.net

Note: The HTTP status header line will always be the first sent to the client, regardless of the actual header() call being the first or not.

What would be the point of redirecting someone if you had to redirect them according to what? You wouldn't know anything if you had to use header() on the very first line.

Example: What if they fill out a form, and you want to know if they filled in all the fields. If they didn't, redirect them back to the form.

<?

if ((!$first_name) && (!$last_name) && (!$email)) {
header("Location: form.php");
exit;

// process the form
?>

That's perfectly legal.

The problem lies in if you OUTPUT anything to the visitor, including spaces before the call to header(). Nowhere does php.net mention that header has to be the first function called on a page. If so, then even the following would be illegal

<?

// redirect to news
header("Location: news.php");

?>

Since a comment is considered PHP code. The only thing keeping you from using header is if you have to output something to the visitor including spaces.

Cgraz

trojan_ted

thanks for that, i must have misread the reference. i'll try header() again. Hopefully i'll have more success this time.

trojan_ted

just tried it, still returns the error

Warning: Cannot add header information - headers already sent by (output started at /homepages/14/d27179409/htdocs/outkastcouk/login.php:11) in /homepages/14/d27179409/htdocs/outkastcouk/login.php on line 218

i replaced the line in the code:

<a href="./index2.php?<?=SID?>">Click to Complete Login</a>

with

header("Location: index2.php");

p.s. By output to the visitor, does this also include drawing the form? if so then this would be why its not working??

Thanks

cgraz

No problem. Since you have already outputted html where you want to use header, I'd just use suntra's advice and put

between the <head></head> tags in your document. change 0 to how many seconds you want to wait before redirecting them, then display a message that says something like

You have been logged in successfully. You are now being redirected to [blank]

Cgraz

trojan_ted

Great works a treat. except for the fact that, if you don't fill out the form it redirects you regardless.

i need to redirect to another page only if the login is successful. Somehow im now thinking this is impossible.

cgraz

np 😉

trojan_ted

YAY!!!

got it working.....

its not pretty but it works fine. solution was -

<?
session_start();
if (session_is_registered("ses_loginid"))
{
header("Location: index2.php?<?=SID?>");
}
?>

</head>

refreshes on itself unless the session is registered then it redirects to the next page.

Thanks for all the help, much appreciated