16) {
$err = '用户名长度 2-16 位';
} elseif (strlen($pwd) < 4) {
$err = '密码至少 4 位';
} else {
$users = json_decode(@file_get_contents($userFile), true) ?? [];
foreach ($users as $u) {
if (strtolower($u['name']) === strtolower($user)) {
$err = '用户名已存在';
break;
}
}
if (!$err) {
$users[] = [
'name' => $user,
'pwd' => password_hash($pwd, PASSWORD_DEFAULT),
'time' => date('Y-m-d H:i')
];
file_put_contents($userFile, json_encode($users, JSON_UNESCAPED_UNICODE));
header('Location: login.php');
exit;
}
}
}
?>
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$err";?>
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