lylme_spage/admin/user.php

<?php 
$title = '账号安全';
include './head.php';
$set=isset($_GET['set'])?$_GET['set']:null;
if($set=='save'){
	$user=$_POST['new-usernameuser'];
	$oldpwd=$_POST['oldpwd'];
	$newpwd=$_POST['newpwd'];
	$repwd=$_POST['confirmpwd'];
	
if($oldpwd==$conf['admin_pwd'])
{
   if(empty($newpwd)){//未修改密码
        if(empty($user))
        {
        echo '<script>alert("未做出更改");history.go(-1);</script>';//只修改用户名
        }
        else
        {
        saveSetting('admin_user',$user);
        echo '<script>alert("用户名修改成功！\n新用户名：'.$user.'\n请牢记，将重新登录！");window.location.href="/admin";</script>'; 
		}
}
    else if(!empty($newpwd))
    {//修改密码
        if ($newpwd==$repwd  && empty($user)) 
        {
            saveSetting('admin_pwd',$newpwd);
            echo '<script>alert("密码修改成功！\n新密码：'.$newpwd.'\n请牢记，将重新登录！");window.location.href="/admin";</script>';
        }
         else if($newpwd==$repwd)
        {
            saveSetting('admin_user',$user);
            saveSetting('admin_pwd',$newpwd);
            echo '<script>alert("修改成功！\n新用户名：'.$user.'\n新密码：'.$newpwd.'\n请牢记，将重新登录！");window.location.href="/admin";</script>';
        }
            
        }
else
{
    echo '<script>alert("两次新密码不一致！");history.go(-1);</script>';
}

}

    else{
          echo '<script>alert("当前密码错误！");history.go(-1);</script>';
      }

}


else{
?>
    
    <!--页面主要内容-->
    <main class="lyear-layout-content">
      
      <div class="container-fluid">
        
        <div class="row">
          <div class="col-lg-12">
            <div class="card">
              <div class="card-body">
                
                <form method="post" action="user.php?set=save" class="site-form">
                    <div class="form-group">
                    <label for="username">当前用户名</label>
                    <input type="text" class="form-control" name="username" id="username" value="<?php echo $conf['admin_user'];?>" disabled="disabled">
                  </div>
                    <div class="form-group">
                    <label for="old-password">新用户名</label>
                    <input type="text" class="form-control" name="new-usernameuser" id="new-username" placeholder="请输入新用户名" value="">
                    <small class="help-block">留空为不修改用户名</small>
                  </div>
                  <div class="form-group">
                    <label for="old-password">*当前密码</label>
                    <input type="password" class="form-control" name="oldpwd" id="old-password" placeholder="输入账号的原登录密码" required>
                
                  </div>
                  <div class="form-group">
                    <label for="new-password">新密码</label>
                    <input type="password" class="form-control" name="newpwd" id="new-password" placeholder="输入新的密码">
                    <small class="help-block">留空为不修改密码</small>
                  </div>
                  <div class="form-group">
                    <label for="confirm-password">确认新密码</label>
                    <input type="password" class="form-control" name="confirmpwd" id="confirm-password" placeholder="重复输入新的密码">
                  </div>
                  <button type="submit" class="btn btn-primary">修改</button>
                </form>
       
              </div>
            </div>
          </div>
          
        </div>
        
      </div>
      
    </main>
    <!--End 页面主要内容-->
  </div>
</div>
<?php 

include './footer.php';
}
?>