Form for numbers only

[egturnkey]

Hello dear friends,

 

i'm always thinking how to make an input text with numbers only and doesn't accept letters

 

case number two how to make it with certain number of digits, i mean only 6 numbers allowed to enter if less , it gives an error

 

<input type="text" name="name" value="" size="40" maxsize="6">

 

how can i make it

1- accept only numbers

2- accept only 6 digits if less shows error

 

 

thanks in advance

[5kyy8lu3]

you can't make it only accept numbers in the field itself with just php alone, you'd have to use something like javascript.

 

but, you can just validate the entered data on the page that your form posts to.

 

ctype_digit() returns TRUE if the string is all numbers.  spaces don't count so you'd have to do a ctype_digit(trim($string)); just to play it safe and to be more user friendly

 

so basically on the page it posts to, have some code sort of like this:

 

if ( ( ctype_digit(trim($_POST['Number'])) ) && ( strlen(trim($_POST['Number'])) <= 6 ) )
{
    //correct
}
else
{
    $_SESSION['Error'] = 'Must be a number 6 digits or fewer.';
    header("Location: LastPage.php");
}

 

then on your form page do this:

 

if ( $_SESSION['Error'] != '' )
{
   echo $_SESSION['Error'];
   unset($_SESSION['Error']);
}

[AdRock]

Here is a tutorial which may help you

 

http://www.plus2net.com/php_tutorial/php_form_validation.php