如果不存在,请插入

时间:2015-11-08 13:52:44

标签: php mysql

我正在使用社交网络,如果用户名或电子邮件相同,我不想将详细信息输入MySQL数据库。

这是我正在使用的PHP:

if (isset($_POST['username']) && isset($_POST['password'])){

  $datejoined = date('m/d/Y h:i:s a', time());;
  $verified = 0;
  $username = $_POST['username'];
  $email = $_POST['email'];
  $password = $_POST['password'];

  $query = "INSERT INTO `members` (username, password, email, verified, datejoined) 
       VALUES ('$username', md5('$password'), '$email', '0', '$datejoined')";

真的很感激一些帮助!

1 个答案:

答案 0 :(得分:1)

创建唯一索引以发现重复项。

create unique index unq_members on members(username);
create unique index unq_members on members(email);

然后,在执行插入时忽略重复项:

INSERT IGNORE INTO `members`(username, password, email, verified, datejoined)
    VALUES ('$username', md5('$password'), '$email', '0', '$datejoined');

或使用:

INSERT INTO `members`(username, password, email, verified, datejoined)
    VALUES ('$username', md5('$password'), '$email', '0', '$datejoined')
    ON DUPLICATE KEY UPDATE username = username;