===== User Registration module: Only one account per email=====

{{lastedit}}

This is a Module for the UserRegistration Framework. 

It checks if the emailadress entered during registration was already used to register a  useraccount. I.e. one mail-adress = one useraccount.

The code was developed due to a request from MovieLady at the SuggestionBox.

Please Test.

%%(php)
<?php
/**
 * Check denying the use of an Emailaddress for the registration of more then one useraccount.
 * 
 * Based on code written for an old request from MovieLady at the SuggestionBox.
 *
 * To implement, set the following in wikka.config.php:
 *	'UR_validation_modules' => 'URUniqueEmailModule'
 * 
 * (If combined with other modules, separate each module with a
 * comma.)
 *
 * @author {@link http://wikkawiki.org/NilsLindenberg NilsLindenberg} 
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License
 * 
 * @see libs/userregistration.class.php
 * @see URAuth, URAuthTmpl
 * @filesource 
 */
class URUniqueEmailModule extends URAuthTmpl
{	
	var $wakka;

	/**
	 * Constructor. 
	 */
	function URTextCaptchaModule(&$wakka)
	{
		$this->wakka = &$wakka;
	}
	
	/**
	 * No need to display something. 
	 */
	function URAuthTmplDisplay()
	{
		return;	
	}

	/**
	 *  Check if an email adress is already used for an useraccount.
	 * 
	 * @uses	Wakka::Query
	 */
	function URAuthTmplVerify()
	{
		$count = 0;
		$query = 	"SELECT COUNT(email)
					FROM ".$this->wakka->config['table_prefix']."users
					WHERE email='".mysql_real_escape_string($_POST['email'])."'";
		if ($r = $this->wakka->Query($query))
		{
			$count = mysql_result($r,0);
			mysql_free_result($r);
		}
		return ($count > 0) ? FALSE : TRUE;
	} 
}
?>
%%

----
CategoryUserContributions, CategoryURModules