Detailed explanation and application examples of video classification and tag management functions in PHP

Detailed explanation and application examples of video classification and tag management functions in PHP

Video classification and tags are one of the common functions in modern websites. By classifying and tagging videos, the website can be improved User experience and content management efficiency. In PHP, there are many functions that can help us achieve these functions. This article will introduce the video classification and tag management functions in PHP in detail and provide practical application examples.

1. Video classification management function

1. Add video classification

In the website, we often need to add new video classifications. In PHP, you can use the functions provided by the mysqli extension library to implement database operations. Below is a sample code that demonstrates how to add a new video category to the database.

<?php
// 连接数据库
$mysqli = new mysqli('localhost', 'root', 'password', 'video_db');

// 检查连接是否成功
if ($mysqli->connect_errno) {
    die('数据库连接失败：' . $mysqli->connect_error);
}

// 添加新的视频分类
$category_name = '电影';
$sql = "INSERT INTO categories (name) VALUES ('$category_name')";
$result = $mysqli->query($sql);

// 检查添加是否成功
if ($result === TRUE) {
    echo '添加视频分类成功！';
} else {
    echo '添加视频分类失败：' . $mysqli->error;
}

// 关闭连接
$mysqli->close();
?>

2. Query video classification

Query video classification can set filtering rules according to different conditions. The following sample code demonstrates how to query all video categories and print the results.

<?php
// 连接数据库
$mysqli = new mysqli('localhost', 'root', 'password', 'video_db');

// 检查连接是否成功
if ($mysqli->connect_errno) {
    die('数据库连接失败：' . $mysqli->connect_error);
}

// 查询所有的视频分类
$sql = "SELECT * FROM categories";
$result = $mysqli->query($sql);

// 检查查询结果是否为空
if ($result->num_rows > 0) {
    while ($row = $result->fetch_assoc()) {
        echo '分类ID：' . $row['id'] . '，分类名称：' . $row['name'] . '<br>';
    }
} else {
    echo '没有找到视频分类！';
}

// 关闭连接
$mysqli->close();
?>

2. Video tag management function

1. Add video tag

For each video, we can add multiple tags to it for better Search and organize well. Below is a sample code that demonstrates how to add video tags to the database.

<?php
// 连接数据库
$mysqli = new mysqli('localhost', 'root', 'password', 'video_db');

// 检查连接是否成功
if ($mysqli->connect_errno) {
    die('数据库连接失败：' . $mysqli->connect_error);
}

// 添加视频标签
$video_id = 1;
$tags = array('动作', '悬疑', '冒险');
foreach ($tags as $tag) {
    $sql = "INSERT INTO video_tags (video_id, tag) VALUES ($video_id, '$tag')";
    $result = $mysqli->query($sql);
}

// 检查添加是否成功
if ($result === TRUE) {
    echo '添加视频标签成功！';
} else {
    echo '添加视频标签失败：' . $mysqli->error;
}

// 关闭连接
$mysqli->close();
?>

2. Query video tags

Query video tags can be filtered by video ID or tag name. The following sample code demonstrates how to query all tags of a video and print out the results.

<?php
// 连接数据库
$mysqli = new mysqli('localhost', 'root', 'password', 'video_db');

// 检查连接是否成功
if ($mysqli->connect_errno) {
    die('数据库连接失败：' . $mysqli->connect_error);
}

// 查询某个视频的所有标签
$video_id = 1;
$sql = "SELECT tag FROM video_tags WHERE video_id = $video_id";
$result = $mysqli->query($sql);

// 检查查询结果是否为空
if ($result->num_rows > 0) {
    while ($row = $result->fetch_assoc()) {
        echo '标签：' . $row['tag'] . '<br>';
    }
} else {
    echo '没有找到视频标签！';
}

// 关闭连接
$mysqli->close();
?>

3. Practical application example

The following is a practical application example that demonstrates how to apply video classification and tag management functions to the backend management system of a video sharing website.

<?php
// 添加视频分类
function addCategory($category_name) {
    // 数据库操作代码
}

// 查询视频分类
function getCategories() {
    // 数据库操作代码
}

// 添加视频标签
function addTag($video_id, $tag) {
    // 数据库操作代码
}

// 查询视频标签
function getTags($video_id) {
    // 数据库操作代码
}

// 后台管理系统添加视频分类
$category_name = '电视剧';
addCategory($category_name);

// 后台管理系统查询所有的视频分类
$categories = getCategories();
foreach ($categories as $category) {
    echo '分类名称：' . $category['name'] . '<br>';
}

// 后台管理系统添加视频标签
$video_id = 1;
$tag = '喜剧';
addTag($video_id, $tag);

// 后台管理系统查询某个视频的所有标签
$tags = getTags($video_id);
foreach ($tags as $tag) {
    echo '标签：' . $tag . '<br>';
}
?>

This article introduces the video classification and tag management functions in PHP in detail and provides practical application examples. By learning and applying these functions, we can better manage video content and improve the user experience and content management efficiency of the website. Hope this article can be helpful to readers.

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