How to use PHP to implement the video upload function of CMS system

How to use PHP to implement the video upload function of CMS system

In modern social media and network applications, video has become a very important form of media. Therefore, it is very necessary to develop a CMS system with video upload function. This article will introduce how to use PHP language to implement the video upload function in the CMS system, and provide relevant code examples.

1. Preparation
Before starting, you need to ensure that the server has configured the PHP environment and installed the corresponding extensions. Specifically, you need to ensure that Fileinfo, GD library and FFMpeg extension are installed. The Fileinfo extension is used to obtain file type information, the GD library is used to handle image thumbnails, and the FFMpeg extension is the core for video transcoding.

2. Write HTML form
First, we need to write an HTML form for users to upload videos. The following is a simple example:

<form action="upload.php" method="post" enctype="multipart/form-data">
    <input type="file" name="video" accept="video/*">
    <input type="submit" value="上传">
</form>

In this form, we implement the file selection function through <input type="file">, and set accept The attribute is video/*, which restricts the selection of only video files.

3. Processing upload requests
Next, we need to write a PHP script to handle the user's upload request and save the video to the server. Here is a simple example:

<?php
// 检查是否有文件上传
if(isset($_FILES['video'])) {
    $file = $_FILES['video'];
    
    // 检查文件类型
    $finfo = finfo_open(FILEINFO_MIME_TYPE);
    $mime = finfo_file($finfo, $file['tmp_name']);
    
    if($mime == 'video/mp4') {
        // 生成唯一的文件名
        $filename = uniqid() . '.mp4';
        
        // 移动上传文件到指定位置
        move_uploaded_file($file['tmp_name'], 'uploads/' . $filename);
        
        // 执行视频转码
        $output = shell_exec("ffmpeg -i uploads/{$filename} -vf thumbnail,scale=320:-1 -frames:v 1 uploads/{$filename}.jpg");
        
        echo "视频上传成功！";
    } else {
        echo "只允许上传MP4格式的视频文件！";
    }
}
?>

In this script, first check if there is a file uploaded, then check the file type using finfo_open() and finfo_file() functions . If the file type is video/mp4, generate a unique file name and then use the move_uploaded_file() function to move the uploaded file to the specified location. Next, use the shell_exec() function to call the FFMpeg command to process the uploaded video and generate a thumbnail. Finally, a prompt message indicating successful upload is output.

Please note that this example is just a simple implementation example and does not consider file security and error handling. In practical applications, more rigorous processing is required.

4. Display videos and thumbnails
Finally, we can use HTML to display uploaded videos and thumbnails. Here is an example:

<video width="320" height="240" controls>
    <source src="uploads/视频文件名.mp4" type="video/mp4">
</video>

<img src="uploads/视频文件名.jpg" alt="缩略图">

In this example, the <video> tag is used to display the video, and the <source> tag specifies the path to the video file. and type. At the same time, use the <img> tag to display the thumbnail, and specify the path to the thumbnail file through the src attribute.

Summary:
Through the above steps, we can use PHP language to implement the video upload function in the CMS system. First, write an HTML form for users to upload videos; then, write a PHP script to handle the upload request, save the video to the server and generate thumbnails; finally, use HTML to display the uploaded video and thumbnails. In order to achieve more complete functions, you can also consider adding file upload restrictions, error handling, security protection and other functions.

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