如何使用PHP开发CMS中的图片和展示管理模块

<form action="upload.php" method="post" enctype="multipart/form-data">
    <input type="file" name="fileToUpload" id="fileToUpload">
    <input type="submit" value="Upload Image" name="submit">
</form>

$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file);

<?php 
    $folder = "uploads/";
    $files = glob($folder . '*.{jpg,jpeg,png,gif}', GLOB_BRACE);
    foreach($files as $file) {
        echo "<a href='deleteImage.php?file=" . $file . "'><img src='" . $file . "' style='width:300px;height:200px;'></a>";
    }
?>

<form action="saveContent.php" method="post">
    <input type="text" name="title" placeholder="Title">
    <textarea name="content" placeholder="Content"></textarea>
    <input type="submit" value="Save" name="submit">
</form>

$title = $_POST["title"];
$content = $_POST["content"];
$sql = "INSERT INTO `content` (`title`, `content`) VALUES ('$title', '$content')";

<?php
    $sql = "SELECT * FROM `content`";
    $result = mysqli_query($conn, $sql);
    while($row = mysqli_fetch_array($result)) {
        echo "<h2>" . $row["title"] . "</h2>";
        echo "<p>" . $row["content"] . "</p>";
    }
?>

<?php
    $id = $_GET["id"];
    $sql = "DELETE FROM `content` WHERE `id` = $id";
    mysqli_query($conn, $sql);
?>