### Install RabbitLoader PHP SDK via Composer

Source: https://rabbitloader.com/kb/setting-up-rabbitloader-on-custom-php-website

This command installs the RabbitLoader PHP SDK using Composer. Ensure your PHP version is 5.6 or higher. Composer handles dependency management for the SDK.

```bash
composer require rabbit-loader/php-sdk
```

--------------------------------

### Install and Activate RabbitLoader Package

Source: https://rabbitloader.com/kb/installing-rabbitloader-on-a-laravel-website

Commands to install the RabbitLoader package via Composer and publish the necessary service provider configuration to the Laravel application.

```bash
composer require rabbit-loader/laravel
php artisan vendor:publish --provider='RabbitLoader\Laravel\RLServiceProvider'
```

--------------------------------

### Static Asset Versioning and Cache Purging

Source: https://rabbitloader.com/kb/installing-rabbitloader-on-a-laravel-website

Techniques for cache busting static assets using query parameters and clearing the entire cache directory via command line.

```html
<link rel="stylesheet" href="https://mywebsite.com/assets/css/theme.css?v=1.2" />
```

```bash
rm /tmp/rabbitloader/*
```

--------------------------------

### Configure Middleware and Environment Variables

Source: https://rabbitloader.com/kb/installing-rabbitloader-on-a-laravel-website

Instructions for registering the RabbitLoader middleware in the Kernel and setting the required license key in the .env file.

```php
//app/Http/Kernel.php

protected $middleware = [
    ...
    \RabbitLoader\Laravel\Process::class
    ...
]
```

```text
RABBIT_LOADER_LICENSE_KEY="license key goes here"
```

--------------------------------

### Exclude JS File from Optimization using Page Rule

Source: https://rabbitloader.com/kb/enable-disable-defer-loading-of-javascript

This example demonstrates how to exclude a specific JavaScript file ('my-imp-script.js') from being optimized or deferred by RabbitLoader using a Page Rule. Multiple file names can be added, separated by a comma. Exercise caution when excluding files, as dependencies on other deferred JS files can cause website breakage.

```html
<script src="my-imp-script.js" />
```

--------------------------------

### Define Cache Exclusion Rules

Source: https://rabbitloader.com/kb/installing-rabbitloader-on-a-laravel-website

Configuring the rabbitloader.php file to define paths and cookies that should be skipped during the optimization and caching process.

```php
//skip caching if path starts with admin
'skipPaths' => ['/admin*'],

//skip caching if a cookie is found with name cookie1 
'skipCookies' => ['cookie1'],
```

--------------------------------

### Exclude Pages from RabbitLoader Optimization

Source: https://rabbitloader.com/kb/setting-up-rabbitloader-on-custom-php-website

These PHP examples show how to exclude specific pages or paths from RabbitLoader optimization using the SDK. You can skip caching based on URL patterns or the presence of specific cookies. These calls must precede the `$rlSDK->process()` method.

```php
//skip caching if path starts with admin
$rlSDK->skipForPaths(['/admin*']);

//skip caching if a cookie is found with name cookie1 
$rlSDK->skipForCookies(['cookie1']);

//all the above options should come before the process() call
$rlSDK->process();
```

--------------------------------

### Exclude JavaScript from Optimization using HTML Attributes

Source: https://rabbitloader.com/kb/enable-disable-defer-loading-of-javascript

Demonstrates how to prevent RabbitLoader from deferring specific external or inline JavaScript files by adding the 'data-rlskip' attribute to the script tag.

```HTML
<!-- Example of excluding external JavaScript -->
<script scr="my-imp-script.js" data-rlskip=1 />

<!-- Example of excluding inline JavaScript -->
<script data-rlskip=1>
   // Your inline JavaScript code here
</script>
```

--------------------------------

### Integrate RabbitLoader SDK in PHP Website

Source: https://rabbitloader.com/kb/setting-up-rabbitloader-on-custom-php-website

Integrates the RabbitLoader SDK into your PHP website's entry file (e.g., index.php). It requires loading the Composer autoloader, initializing the SDK with your license key and storage directory, and calling the process method before any output.

```php
#1 make sure the composer autolaod file is loaded at the top
require_once("/vendor/autoload.php");


#2 integrate RabbitLoader
$licenseKey = 'YOUR_LICENSE_KEY'; //get your license key from environment variable
$storageDir = '/home/usr/cache-disk/rabbitloader'; //full path storage location where cached files will be stored
$rlSDK = new RabbitLoader\SDK\RabbitLoader($licenseKey, $storageDir);
$rlSDK->process();

#3 important headers
header('Content-Type: text/html; charset=utf-8');

#4 remaining code of the website goes after this ...
echo "<h1>Hello World!</h1>"
```

--------------------------------

### Programmatic Cache Invalidation

Source: https://rabbitloader.com/kb/installing-rabbitloader-on-a-laravel-website

Using the RabbitLoader SDK to trigger a cache purge for specific URLs when content is updated within the application.

```php
$liceseKey = config('rabbitloader.licenseKey', '');
$cacheDir = config('rabbitloader.cacheDir', '');
$rlSDK = new RabbitLoader\SDK\RabbitLoader($licenseKey, $cacheDir);

$urlModified = 'https://mywebsite.com/modified-page-slug/';
$rlSDK->onContentChange($urlModified);

#if home page needs to be purged too, then-
$rlSDK->onContentChange('https://mywebsite.com/');
```

--------------------------------

### Purge RabbitLoader Cache for Specific URLs

Source: https://rabbitloader.com/kb/setting-up-rabbitloader-on-custom-php-website

This PHP code demonstrates how to programmatically purge the RabbitLoader cache for specific URLs. It's useful for updating content and ensuring users see the latest version. The `onContentChange` method should be called before the `process()` method.

```php
#admin.php
#load composer autoload.php and initialize PHP SDK.

$urlModified = 'https://mywebsite.com/modified-page-slug/';
$rlSDK->onContentChange($urlModified);

#if home page needs to be purged too, then-
$rlSDK->onContentChange('https://mywebsite.com/');
```