validating empty spaces in textfields

[sheraz]

Hi, i am creating a registration form, i am trying to apply some constraints on the fields, i.e 'name field should not be numeric' and all  fields must be non empty. the problem is  if user only enter spaces in the fields, the form is validated without any error.

please tell me how i can get rid of this problem. :'(

 

function create_account()

{

$uname=$_POST['uname'];

$email=$_POST['email'];

                        $pwd=$_POST['pwd'];

$retyped_pwd=$_POST['retyped_pwd'];

 

if(empty($uname) || empty($email) || empty($pwd) || empty($retyped_pwd))

{

echo "<font color='red' size=2>Please fillup the required fields..";

}

else if($uname=="" || $email="" || $pwd="" || $retyped_pwd=="")

{

echo "<font color='red' size=2>Please fillup the required fields..";

}

else if($_POST['uname']==null || $_POST['email']==null || $_POST['pwd']==null || $_POST['retyped_pwd']==null)

{

echo "<font color='red' size=2>You typed Empty String";

}

?>

[Ken2k7]

Wow. Please do not post code like that if you want help. And read the rules, particularly Forum DOs section.

 

http://www.phpfreaks.com/page/rules-and-terms-of-service

[AndrewJ1313]

You could try a str_replace function (http://php.net/manual/en/function.str-replace.php) to replace spaces within the fields you do not want left blank. Once all spaces in a field are replaced with null value, you can check to see if they still contain any submitted data:

 

// create variable of field
$field = $_POST['name'];

// replace spaces ' ' with null value ''
$field = str_replace(' ', '', $field);

// check if field is null
if($field == '') { 
  ...return error...
} else { 
  ...continue...
}

 

Hope this helps...

[Kalland]

You could use php's trim method. This method removes spaces before and after a string.

[xcoderx]

trim(), ltrim(), and strip_tags()