PHP 연구 노트: 음악 플레이어 및 비디오 플랫폼

<?php
if(isset($_POST['submit'])){
  $target_dir = "uploads/";
  $target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
  move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file);
  echo "文件上传成功！";
}
?>

<form action="" method="post" enctype="multipart/form-data">
  选择音乐文件：
  <input type="file" name="fileToUpload" id="fileToUpload">
  <input type="submit" value="上传" name="submit">
</form>

<?php
$music_dir = "uploads/";
$music_files = glob($music_dir . "*.mp3");

foreach($music_files as $file) {
  echo basename($file) . "<br>";
}
?>

<audio id="audioPlayer" controls>
  <source src="" type="audio/mpeg">
  您的浏览器不支持音频播放。
</audio>

<script>
var audioPlayer = document.getElementById("audioPlayer");

function playMusic(file) {
  audioPlayer.src = "uploads/" + file;
  audioPlayer.play();
}
</script>

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "music";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
  die("连接失败: " . $conn->connect_error);
}

$sql = "SELECT * FROM songs";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  while($row = $result->fetch_assoc()) {
    echo $row["song_name"] . " - " . $row["artist"] . "<br>";
  }
} else {
  echo "没有歌曲数据。";
}

$conn->close();
?>

<?php
if(isset($_POST['submit'])){
  $target_dir = "uploads/videos/";
  $target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
  move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file);
  echo "文件上传成功！";
}
?>

<form action="" method="post" enctype="multipart/form-data">
  选择视频文件：
  <input type="file" name="fileToUpload" id="fileToUpload">
  <input type="submit" value="上传" name="submit">
</form>

<video width="320" height="240" controls>
  <source src="" type="video/mp4">
  您的浏览器不支持视频播放。
</video>

<?php
$video_dir = "uploads/videos/";
$video_files = glob($video_dir . "*.mp4");

foreach($video_files as $file) {
  echo basename($file) . "<br>";
}
?>

<form action="" method="get">
  <input type="text" name="keyword">
  <input type="submit" value="搜索">
</form>

<?php
if(isset($_GET['keyword'])){
  $keyword = $_GET['keyword'];

  foreach($video_files as $file) {
    if(strpos(basename($file), $keyword) !== false) {
      echo basename($file) . "<br>";
    }
  }
}
?>