Validate Field

[affc]

Hello all,

 

I am trying to do a php check to make sure the input of the field is actually alphanumeric for the NAME that also allows uppercase, and the username that cannot accept Uppercase, please does anyone knwo why this code is not working? Just processes it as complete everytime.

 

<?php
$NAME=$_POST['NAME'];
$Username=$_POST['Username'];

if (preg_match('/[^A-Za-z0-9]/', $NAME)){
header("Location:complete.php");
}
else{
header("Location:error.php");
}
if (preg_match('/[^a-z0-9]/', $Username)){
header("Location:complete.php");
}
else{
header("Location:error.php");
}
?>

[DarkWater]

You need to put exit; after your header("Location:") calls.  And you can't have an elseif where you have it...And you only want to redirect to complete.php if EVERYTHING checks out.  Oh yeah and you don't need a regex for this.  Just use ctype_alnum().

if (!ctype_alnum($NAME)) {
      $error = true;
}
if (!ctype_alnum($Username)) {
      $error = true;
}
if ($error) {
   header("Location: error.php");
}
else {
   header("Location: complete.php"); 
}

 

Just an idea.  Not necessarily how I'd do validation, but it gets the job done.

[affc]

Awesome thanx,

 

Only problem is the Username I wanted to have it limit to only lowercase and the NAME to have both lowercase and uppercase,

 

Regards

[MasterACE14]

use strtolower();

[affc]

Awesome,

 

thanx,

[affc]

Just discovered that it actually just changes the field to all lowercase eg : FieLd - will change to - field. I need it to be able to produce the error if it is not lower case alpha numeric. As the user will then need to change the username to lowercase manually so they are aware when its processed its all in lowercase, can this be done as I cannot find a way to do it?

 

Thanx

[affc]

Oh sorry doesn't matter as i created an acho to let people know their username once complete

 

Thanx for the help