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VarnishAdmin::start is a PHP function used to start the Varnish HTTP accelerator program. It is typically used in web server configurations to improve the performance and scalability of websites.

To use VarnishAdmin::start, you need to have Varnish installed on your server and the Varnish module enabled in your PHP configuration.

Here's an example of how you can use VarnishAdmin::start:

php
<?php
// Create a new instance of VarnishAdmin
$admin = new VarnishAdmin();

// Connect to the Varnish management interface
$admin->connect('127.0.0.1', 6082);

// Start Varnish
$admin->start();
?>


In this example, we create a new instance of the VarnishAdmin class and connect to the Varnish management interface using the connect method. We then call the start method to start Varnish.

Please note that the example above assumes you have the VarnishAdmin PHP extension installed and configured correctly. You may need to install the extension and set proper permissions to use the VarnishAdmin class in your PHP code.

I hope this helps! Let me know if you have any further questions.