[RaelRode]

PHP Code:

function make_safe($make_safe) 

    {

        if(get_magic_quotes_gpc())// If magic quotes is enabled

                {

                    $string = stripslashes($string);//Remove slashes from the string

                }

                else //If not 
                    {

                        $make_safe = addslashes(trim($make_safe));

                    }

            $make_safe = escapeshellcmd($make_safe); //Remove all SHELL commands

            $make_safe = escapeshellarg($make_safe); //Remove all SHELL commands to be run as an argument

            $make_safe = mysql_real_escape_string($make_safe); //Stop MOST MySQL injections

            $make_safe = stripslashes(strip_tags(htmlspecialchars($make_safe, ENT_QUOTES))); //Remove XHTML, remove slashes

        

        return $make_safe; // Return the safe string

    } // End make safe functions 


PHP Code:

// This function encrypts users passwords 3 times.

    function encrypt($encrypt)

    {

        $encrypt = md5($encrypt); // Encrypt the string to MD5

        $encrypt = sha1($encrypt); // Encrypt the MD5 string to SHA1

        $encrypt = md5($encrypt); // Encrypt the SHA1 string to MD5 AGAIN!!

        return $encrypt; // Return the encrypted string.

    } // End encryption function 


PHP Code:

// This function check if a user has used a correct email, if not, it dies.

    function check_email($check_email) 

    {

        $_name = "/^[-!#$%&'*+./0-9=?A-Z^_`{|}~]+"; // Name check, bit before @

        $_host = "([-0-9A-Z]+.)+"; // Host check, bit after @

        $_tlds = "([0-9A-Z]){2,4}$/i"; // TLD check, bit after .

        

            if(!preg_match($_name."@".$_host .$_tlds,$email)) // If the email isn't valid..

                {

                    die("Please enter a valid email address"); // Kill the function

                }

                else // if email is valid

                    {

                    return $check_email; // Return the email string

                    }

    } // End check email function

} 


These aren't too complex, but they work, so yeah. Happy XMAS!!!!!!

I love using die(); in my scripts. XD