SpamSafeEmail Function

/**
 * spamsafeemail() - Purpose is to modifiy the email address to
 *                   hide it from website spiders which scan for emails for example to use
 *                   them for spam purpose.
 * @param mixed $email - the email address
 * @param string $at - replacement value for @
 * @param string $dot - replacement value for .
 * @return - the email returned example: myname[at]mail[dot]com
 */
function spamsafeemail($email,$at = '[at]',$dot = '[dot]')
{
    if(!empty($email))
    {
        if(strstr($email,'@') && strstr($email,'.'))
        {
            return str_replace('.',$dot,str_replace('@',$at,$email));
        }

    }
}