运用WebMan技术打造在线音乐学习平台

<audio controls>
  <source src="music.mp3" type="audio/mpeg">
  Your browser does not support the audio element.
</audio>

<div class="sheet-music">
  <img src="sheet-music.png" alt="Sheet Music">
</div>

<style>
 .sheet-music {
   width: 100%;
 }
  
 .sheet-music img {
   max-width: 100%;
 }
</style>

<audio id="practice-audio" src="music.mp3"></audio>

<button onclick="startPractice()">Start Practice</button>

<script>
  function startPractice() {
    var audio = document.getElementById("practice-audio");
    audio.play();
  }
</script>

<span id="progress">0%</span>

<button onclick="updateProgress()">Update Progress</button>

<script>
  function updateProgress() {
    var progress = Math.floor(Math.random() * 100);
    localStorage.setItem("progress", progress);
   
    document.getElementById("progress").innerHTML = progress + "%";
  }
  
  window.onload = function() {
    var progress = localStorage.getItem("progress");
    document.getElementById("progress").innerHTML = progress + "%";
  }
</script>

<?php
  // 连接数据库
  $conn = mysqli_connect("localhost", "username", "password", "database");
  
  // 获取用户信息
  $query = "SELECT * FROM users";
  $result = mysqli_query($conn, $query);
  
  while ($row = mysqli_fetch_assoc($result)) {
    echo "Username: " . $row["username"] . "<br>";
  }
  
  // 关闭数据库连接
  mysqli_close($conn);
?>