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106 lines
3.7 KiB
Markdown
Hier is de handleiding aangevuld met de stappen voor het instellen van de `opcache.file_cache` directive, wat een extra prestatieverbetering biedt.
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Here is a step-by-step tutorial in English on how to enable OPcache.
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### Step 1: Install the OPcache PHP Extension
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First, you need to install the OPcache module for your specific PHP version. The package name is typically `php-opcache`, but you must specify the exact version.
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1. **Check your PHP version:**
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`php -v`
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2. **Install the correct package:**
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Replace `<version>` with your PHP version (e.g., `8.3`, `8.4`).
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`sudo apt install php<version>-opcache`
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This command installs the extension for both the CLI (Command-Line Interface) and PHP-FPM/Apache.
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### Step 2: Configure `php.ini`
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Now, you need to enable and configure OPcache in your PHP configuration file. The file's location depends on your web server.
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1. **Find your `php.ini` file:**
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* **For Nginx/PHP-FPM:** `/etc/php/<version>/fpm/php.ini`
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* **For Apache:** `/etc/php/<version>/apache2/php.ini`
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2. **Edit the file:**
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Open the file using a text editor like `nano`.
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`sudo nano /etc/php/<version>/fpm/php.ini`
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3. **Add/Edit the `[opcache]` section:**
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Add or find the `[opcache]` section and ensure the following lines are present and uncommented (remove the `;` if it's there).
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```ini
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[opcache]
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opcache.enable=1
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opcache.memory_consumption=512
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opcache.max_accelerated_files=20000
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opcache.revalidate_freq=60
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```
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* `opcache.enable=1`: This enables OPcache for your web server.
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* `opcache.memory_consumption`: Adjust this value based on your server's RAM and website size. For a 24 GB server and a large site, `512` is a good starting point.
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* `opcache.max_accelerated_files`: Adjust this based on the number of PHP files in your project. A value of `20000` or higher is recommended for large websites.
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* `opcache.revalidate_freq`: This tells OPcache how often (in seconds) to check for file updates. `60` is a good value for a production environment.
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-----
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### Step 3: Enable the File Cache 💾
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This is an optional but highly recommended step for an additional performance boost. It creates a persistent cache on your hard drive, which is useful when the server restarts.
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1. **Add the following line to the `[opcache]` section** in your `php.ini` file:
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```ini
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opcache.file_cache="/var/www/opcache"
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```
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This directive sets the path where OPcache will store a copy of the precompiled bytecode.
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2. **Create the cache directory** and make sure your web server has write permissions.
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```bash
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sudo mkdir /var/www/opcache
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sudo chown -R www-data:www-data /var/www/opcache
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```
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(Note: The user `www-data` is common on Debian/Ubuntu. If you're on a different system, replace `www-data` with your web server's user, e.g., `apache` or `nginx`).
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### Step 4: Restart Your Web Server 🔄
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After saving the `php.ini` file, you must restart your web server for the changes to take effect. The command depends on your setup.
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* **For Nginx (with PHP-FPM):**
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`sudo systemctl restart php<version>-fpm`
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* **For Apache (with mod\_php):**
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`sudo systemctl restart apache2`
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### Step 5: Verify that OPcache is Active
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To confirm that OPcache is working, create a PHP info file in your web root.
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1. **Create a file named `info.php`:**
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```php
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<?php
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phpinfo();
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?>
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```
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2. **View the file in your browser:**
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Navigate to `http://your_domain.com/info.php`.
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3. **Check the OPcache section:**
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Search for **"Zend OPcache"**. The "Opcode Caching" status should be **"Up and Running"**. You will also see the configuration settings you just applied, including the path to the file cache. |