How do you clear the cache in FuelPHP?

Clearing the cache in FuelPHP can be done in several ways depending on your caching strategy. FuelPHP provides a built-in cache system that supports various drivers, including file, Redis, Memcached, and more. Here’s how you can clear the cache in different scenarios:

1. Clearing Cache with Cache Class

If you are using FuelPHP’s Cache class, you can clear the cache in several ways:

1.1. Clear a Specific Cache Item

To clear a specific cache item, you can use the Cache::delete method:

Example


<?php

function clear_cache_directory($path)
{
    $files = glob($path . '/*'); // get all file names
    foreach($files as $file) { // iterate files
        if(is_file($file))
            unlink($file); // delete file
    }
}

// Clear cache directory
clear_cache_directory(APPPATH . 'cache');

Note: Flushing Redis or Memcached will clear all cached data, not just your application-specific cache.

2. Clearing Cache via Artisan Command (if using a custom command)

If you have set up custom cache management via Artisan commands, you can define a command to clear the cache:

Create a Command:

Example


<?php

namespace Fuel\Tasks;

class Clearcache
{
    public function run()
    {
        // Assuming file cache
        $this->clear_cache_directory(APPPATH . 'cache');
    }

    protected function clear_cache_directory($path)
    {
        $files = glob($path . '/*'); // get all file names
        foreach($files as $file) { // iterate files
            if(is_file($file))
                unlink($file); // delete file
        }
    }
}

3. Clearing Cache in a Controller or Model

You can also clear the cache from within a controller or model if you need to clear cache as part of your application’s logic:

Example


<?php

class Controller_Cache extends Controller
{
    public function action_clear()
    {
        // Clear a specific cache item
        Cache::delete('example_view_cache');

        // Or clear all cache items (depending on the driver)
        $this->clear_cache_directory(APPPATH . 'cache');

        return Response::forge('Cache cleared');
    }

    protected function clear_cache_directory($path)
    {
        $files = glob($path . '/*'); // get all file names
        foreach($files as $file) { // iterate files
            if(is_file($file))
                unlink($file); // delete file
        }
    }
}

Summary

Clear Specific Cache Item: Use Cache::delete($key).
Clear All Cache Items: For file-based caching, manually delete files in the cache directory. For Redis and Memcached, use the appropriate flush commands.
Custom Cache Management: Create custom commands or scripts for more complex cache management.

How do you clear the cache in FuelPHP?

1. Clearing Cache with Cache Class

1.1. Clear a Specific Cache Item

Example

2. Clearing Cache via Artisan Command (if using a custom command)

Example

3. Clearing Cache in a Controller or Model

Example

Summary

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