[pernaveikko]

Hi!

How can I show errors on an input page when a user has not filled in all the required fields?

On a page there's a message, for instance, "Please, go back and enter your email address".

When the user goes back to the preceeding page I would like to show the missing field with a red arrow or something. Obviously, the information has been given already but I'd like to make it more visible to them.

Another question:

How can I divide search results to many pages? For example, if there are 100 results I'd need to put them to five pages with 20 results each.

Cheers.

[NeverMind]

you need to check if the variables posted are filled with either empty() or ! ..
something like this :

PHP Code:

//simple form with name,email and comments ..

$name = trim($_POST['name']);

$email = trim($_POST['email']);

$comment = trim($_POST['comments']);



if (!$name) {

  echo'You did not fill "Name" field!<br />';

}

if (!$email) {

  echo'You did not fill "E-mail" field!<br />';

}

if (!$comment) {

  echo'You did not fill "Comments" field!<br />';

} 

this is a method, but there is another one .. Blaw's one

PHP Code:

foreach ($_POST as $field => $value) {

  if (!$value) {

    echo $field . ' was not filled! please go back and fill it<br />';

}

} 

as for the second question..
you can do this with LIMIT in mysql_query() ..
example:

Code:

SELECT * FROM table_1 LIMIT 0, 10;

this LIMIT will start fetching 10 records from record number zero!
how can you tell the LIMIT to fetch the next 10 in php?! use a GET var in your url .. something like this:

PHP Code:

if (!isset($_GET['startrow'])) {

  $start = 0;

} else {

  $start = $_GET['startrow'];

}



$fetch = mysql_query("SELECT * FROM table_1 LIMIT $start, 10"); 

the url should look like this :
page.php?startrow=NUMBER_HERE

[pernaveikko]

you need to check if the variables posted are filled with either empty() or ! ..
something like this :


Yeah, that's exactly what I've done at the moment but I'd just like to make it a bit more better. When the user goes back to the page I would like to highlight the missing field.

Or it would be even better if there wasn't an error page at all but the same page was loaded with the missing fields highlighted...

Thanks for the other question as well, it looks straight forward enough, I'll try and code that.

[Addict]

I would suggest JavaScripting for that. Why bother with submitting a form if the fields aren't filled in? Since JavaScript is client side it will save that step.

You can also do the highlighting like you mentioned. I'll try to dig up a good example.