PHP... is(not)set ?!

Goodshape

taking info from a html form (POST), I want to do the echo and include if the values are left blank. The following doesn't work...

[php]if (empty($_POST) OR empty($_POST)){
echo "<p align=center style=\"color: white;\">Please fill in all required fields</p>";
include ("include/confirm.php");
}[/php]
...anyone know what will? is there something like an 'isnotset' option?

cheers.

Ph3n0m

use this

<?
if ((!isset($_POST['name'])) || (!isset($_POST['email']))){
    echo "<p align=center style=\"color: white;\">Please fill in all required fields</p>";
    include ("include/confirm.php");
} 
?>

Goodshape

this didn't work actually.. went for an ugly workaround in the end.

cheers anyway.

seamus

Goodshape wrote:

this didn't work actually.. went for an ugly workaround in the end.

cheers anyway.

Be aware that for Form variables, even if the user leaves a field blank, it still gets submitted as the empty string. It's a PITA but you have to check for both
!isset($_POST) and $_POST != ""



(You could also use preg_match() for a more comprehensive solution to ensure that the user doesn't insert a field full of spaces, etc)

Serbian

seamus wrote:

(You could also use preg_match() for a more comprehensive solution to ensure that the user doesn't insert a field full of spaces, etc)

preg_match() is a bit overkill, just use trim(). I would imagine that preg_match is slower than trim too, but I'm sure in the grand scheme of things you wouldn't really notice.

seamus

Serbian wrote:

preg_match() is a bit overkill, just use trim(). I would imagine that preg_match is slower than trim too, but I'm sure in the grand scheme of things you wouldn't really notice.

Ultimately you can (should?) use preg_match() or something equivalent to validate all input, e.g. to prevent text being entered for a numeric field, etc. I'm sure there's a remove_text() function already written for that or something. Using preg_match() is not something I've ever done though.