Drupal - Simple captcha

Hi,


This article is about using custom captcha in Drupal. This one is a custom created module in Drupal. This is developed under Drupal 6.20 environment. I am sure if you get a feel of it you can modify it for other versions as well.

You can get the code from here.

This is how it would look like:

Code & Explanation:

After you have downloaded the module. Install it in your project. Once done that, all you have to do is to put the following lines of code in your page form:

Remove special characters - PHP

Hi,

I know there are a million ways to remove special characters but this is one of the better solutions which I came across over the internet. Here is the PHP function:

function just_clean($string)
{
// Replace other special chars
$specialCharacters = array(
‘#’ => ”,
‘$’ => ”,
‘%’ => ”,
‘&’ => ”,
‘@’ => ”,
‘.’ => ”,
‘€’ => ”,
‘+’ => ”,
‘=’ => ”,
‘§’ => ”,
‘\\’ => ”,
‘/’ => ”,
);
while (list($character, $replacement) = each($specialCharacters)) {
$string = str_replace($character, '-' . $replacement . '-', $string);
}
$string = strtr($string,
"ÀÁÂÃÄÅ? áâãäåÒÓÔÕÖØòóôõöøÈÉÊËèéêëÇçÌÍÎÏìíîïÙÚÛÜùúûüÿÑñ",
"AAAAAAaaaaaaOOOOOOooooooEEEEeeeeCcIIIIiiiiUUUUuuuuyNn"
);
// Remove all remaining other unknown characters
$string = preg_replace('/[^a-zA-Z0-9\-]/', ' ', $string);
$string = preg_replace('/^[\-]+/', '', $string);
$string = preg_replace('/[\-]+$/', '', $string);
$string = preg_replace('/[\-]{2,}/', ' ', $string);
return $string;
}

Best of luck

Reading disabled HTML fields on page submit

Hi folks,

This probably is not a very big solution, but might be useful for newbies. To prevent users from entering data in any textbox or dropdown, you can either use "readonly" or "disabled". Readonly works fine, apart from the fact that the interface of the fields won't look like they are uneditable. Apart from that if it works for you, then its fine.

For "disabled"  option, not only the entire fields becomes uneditable, but also the interface has the feel that it is disabled. The biggest problem with disabled fields is if the form is submitted, the disabled fields are not submitted.


If you face a scenario where you absolutely have to use disabled fields and yet post the values in form submit, then a quick fix would be