我需要添加功能,如果有人輸入大字符的用戶名,它會以小字符保存到db。註冊時大字或小字
if(empty($_POST) === false && empty($errors) === true){
$register_data = array(
'username' => $_POST['username'],
'first_name' => $_POST['first_name'],
'last_name' => $_POST['last_name'],
'email' => $_POST['email'],
'password' => $_POST['password'],
'joined' => date('Y-m-d H:i:s'),
'email_code' => md5($_POST['username'] + microtime()),
);
http://www.php.net//manual/en/ function.strtolower.php – Steve