How to use PHP to implement the content review function of CMS system

How to use PHP to implement the content audit function of CMS system

With the rapid development of the Internet, Content Management System (CMS) is increasingly favored by corporate and personal websites. In a CMS system, the content audit function is indispensable. It can ensure the quality of content posted on the website and reduce the occurrence of malicious or inappropriate information. This article will introduce how to use PHP to implement the content audit function of the CMS system and give corresponding code examples.

1. Requirements analysis of CMS system content review function

Before designing and implementing the content review function, we need to clarify the content review requirements of the CMS system. Generally speaking, the content review function of a CMS system should include the following aspects:

1. Sensitive word filtering: Filter sensitive words in user-submitted content, such as abuse, advertising, illegal content, etc.
2. Spam filtering: Filter junk information, such as meaningless characters, garbled codes, etc.
3. Picture information review: Review the pictures uploaded by users to prevent the publication of bad or illegal pictures.
4. Manual review: Manually review the submitted content to ensure the accuracy and legality of the content.

2. Implement sensitive word filtering function

Sensitive word filtering can be implemented using PHP regular expressions. First, we need to build an array containing sensitive words, the sample code is as follows:

$sensitiveWords = array('敏感词A', '敏感词B', '敏感词C');

Then, we can use the preg_replace function to replace the sensitive words with asterisks or other specific characters, the sample code is as follows:

$content = '这是一段包含敏感词的内容，敏感词A和敏感词B都是不合法的。';
$filteredContent = preg_replace('/('.implode('|', $sensitiveWords).')/i', '***', $content);
echo $filteredContent;

3. Implement spam filtering function

Spam filtering can also be implemented using regular expressions. For example, we can filter out content that contains multiple repeating characters. The sample code is as follows:

$content = '这是一段包含垃圾信息的内容，2222222222222222222222222222222222222222222'. 
           'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.........';
$filteredContent = preg_replace('/(.)
{3,}/i', '***', $content);
echo $filteredContent;

4. Implement the picture information review function

Picture information review can be implemented using a third-party image recognition service. For example, we can use the image review API in Baidu's artificial intelligence service. First, we need to register an account on Baidu Cloud Platform, create an application, and obtain the corresponding API Key and Secret Key.

Then, we can use PHP's curl function to send the image to Baidu Cloud. The sample code is as follows:

$apiKey = 'your_api_key';
$secretKey = 'your_secret_key';
$imageFile = 'path_to_your_image_file';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=' . 
              $apiKey . '&client_secret=' . $secretKey);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);
$response = json_decode($response, true);
$accessToken = $response['access_token'];

curl_setopt($ch, CURLOPT_URL, 'https://aip.baidubce.com/rest/2.0/solution/v1/img_censor/v2/user_defined');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array('image' => base64_encode(file_get_contents($imageFile))));
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);
$response = json_decode($response, true);

if ($response['conclusionType'] == 1) {
    // 图片合规，通过审核
    // 执行其他逻辑
} else {
    // 图片不合规，不通过审核
    // 执行其他逻辑
}

curl_close($ch);

5. Implement manual review function

Manual review required The CMS system administrator intervenes to provide auditing functions on the interface. The specific implementation method depends on actual needs.

6. Summary

This article introduces how to use PHP to implement the content review function of the CMS system. Filter sensitive words and spam information through regular expressions, use third-party image recognition services to review image information, and provide implementation ideas for manual review. In practice, we can optimize and expand the code according to actual conditions. I hope this article can help developers who need to implement content review functions.

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