How to use PHP to implement a content distribution website in Typecho

How to use PHP to implement a content distribution website in Typecho

In the modern Internet, content distribution website (Content Delivery Network, CDN) has become an essential tool for website acceleration and optimization. As a lightweight blogging program, Typecho can also easily integrate CDN functions to improve website access speed and stability. This article will introduce how to use PHP to implement Typecho's content distribution website.

First, we need to ensure that we have purchased the CDN service and obtained the domain name of the CDN node (for example: cdn.example.com). Next, we need to modify Typecho’s configuration file config.inc.php.

Open the config.inc.php file and find the following code:

define('__TYPECHO_UPLOAD_DIR__', __TYPECHO_ROOT_DIR__ . '/usr/uploads');

Modify it to:

define('__TYPECHO_UPLOAD_DIR__', 'http://cdn.example.com/uploads');

In this way, Typecho's upload directory will point to the domain name of the CDN node.

Next, we need to distribute the static resources (such as CSS and JS files) in Typecho through CDN. We can use PHP code in Typecho's theme file (for example: /usr/themes/default/header.php) to dynamically load static resources.

Add the following code in the header file:

<?php if ($this->options->useCDN): ?>
<link rel="stylesheet" type="text/css" href="<?php $this->options->themeUrl('style.css'); ?>">
<script type="text/javascript" src="<?php $this->options->themeUrl('script.js'); ?>"></script>
<?php else: ?>
<link rel="stylesheet" type="text/css" href="<?php $this->options->themeUrl('style.css'); ?>">
<script type="text/javascript" src="<?php $this->options->themeUrl('script.js'); ?>"></script>
<?php endif; ?>

In the Typecho background management interface, we can add a global setting option to turn on or off the CDN function. Add the following code in Typecho's theme file (for example: /usr/themes/default/options.php):

<p><label for="useCDN">使用CDN加速：</label>
<select id="useCDN" name="useCDN">
    <option value="0" <?php if($this->options->useCDN == '0') echo 'selected'; ?>>关闭</option>
    <option value="1" <?php if($this->options->useCDN == '1') echo 'selected'; ?>>开启</option>
</select></p>

Finally, we also need to add the code to save the configuration in functions.php of the theme file. Add the following code to the functions.php file:

public static function setOptions($theme){
    Typecho_Widget::widget('Widget_Options')->to($options);
    $useCDN = $options->themeFile($theme.'/options.php');
    if($useCDN->plugcdn == '1'){
        $options->plugin('PlugCDN')->useCDN = 1;
    }else{
        $options->plugin('PlugCDN')->useCDN = 0;
    }
}

After saving the file, log in to Typecho's backend management interface, enter Appearance - Theme Settings, and you will see a new option "Use CDN Acceleration". You can enable or disable the CDN function by selecting On or Off.

At this point, we have completed the configuration of Typecho’s content distribution website. When we upload files or load static resources in Typecho, they will be distributed through CDN to improve the loading speed and stability of the website.

To sum up, it is very simple to implement Typecho’s content distribution website using PHP. By modifying the configuration file, dynamically loading static resources and adding global setting options, we can easily implement Typecho's CDN acceleration function. This not only improves the performance and access speed of the website, but also effectively reduces the load on the server, giving users a better access experience. Make our website even better!

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