---
title: Allowing Caching for WPML and WCML on Pressable
url: "https://pressable.com/knowledgebase/allowing-caching-for-wpml-and-wcml-on-pressable/"
published: 2025-04-18
modified: 2025-11-10
author: Obatarhe Otughwor
---

If you’re using the [WooCommerce Multilingual & Multicurrency ](https://href.li/?https://wordpress.org/plugins/woocommerce-multilingual/)(WCML) plugin with the [WPML plugin](https://wpml.org/) on Pressable, you might experience caching issues due to specific cookies that interfere with Batcache and Edge Cache.

These cookies include the following:

- `wcml_client_currency`
- `wcml_client_currency_language`
- `wcml_client_country`
- `wp-wpml_current_language`

The cookies are set to manage currency and language preferences but can prevent caching, causing potential performance issues on your Pressable site.

To address this, you can customize Batcache to recognize these cookies, ensuring that caching functionality is restored while maintaining the necessary multilingual and multi-currency features on your Pressable site.

Please follow all the steps below to address the issue.

## Disable Language Filtering for AJAX Operation

The `wp-wpml_current_language `cookie is set when the “Language filtering for AJAX operations” feature is enabled in WPML, can interfere with Edge Cache. To prevent this, consider disabling this feature:

![Disable wp-wpml_current_language cookie from interfering with batcache.](https://i0.wp.com/pressable.com/wp-content/uploads/2025/04/filtering_ajax.webp?resize=1024%2C147&ssl=1)Language filtering for AJAX operations option on WPML Settings- In your WordPress dashboard, go to `WPML → Languages. `
- Scroll to the “Language filtering for AJAX operations” section.
- Uncheck the option labeled “`Store a language cookie to support language filtering for AJAX`“.

Disabling this setting will prevent WPML from setting the `wp-wpml_current_language `cookie, allowing the ***Edge cache*** to `hit`. Then Implement Batcache Customizations using the steps below.

## Cache Customization Options

There are two options—you can use either one depending on your preference when implementing Batcache customization for WPML cookies:

### Option 1: Batcache customization for WPML – Directly Modify wp-config.php

Directly Modify wp-config.php

- Use[ SFTP](https://pressable.com/knowledgebase/setup-and-use-sftp-to-connect-to-your-wordpress-site/) or[ SSH](https://pressable.com/knowledgebase/connect-to-ssh-on-pressable/) to connect to your site’s files
- Locate the `wp-config.php` file in your site’s root `/htdocs` directory
- Place the code snippet below **immediately above** the line:
- *`/* That's all, stop editing! Happy blogging. */`*

```
//Batcache Customizations
global $batcache;

//Check if batcache params are in an object or an array, apply customizations accordingly
if ( is_object( $batcache ) ) {

    // Merge WCML/WPML cookie names with existing noskip_cookies, or set them if not defined.
    $new_noskip = array(
        'wcml_client_currency',
        'wcml_client_currency_language',
        'wcml_client_country',
        'wp-wpml_current_language'
    );
    if ( !isset($batcache->noskip_cookies) || !is_array($batcache->noskip_cookies) ) {
        $batcache->noskip_cookies = $new_noskip;
    } else {
        $batcache->noskip_cookies = array_unique(array_merge($batcache->noskip_cookies, $new_noskip));
    }

    // Merge WCML/WPML cookie values into the unique cache key components.
    if ( !isset($batcache->unique) || !is_array($batcache->unique) ) {
        $batcache->unique = array();
    }
    $batcache->unique['wcml_client_currency'] = isset($_COOKIE['wcml_client_currency']) ? $_COOKIE['wcml_client_currency'] : '';
    $batcache->unique['wcml_client_currency_language'] = isset($_COOKIE['wcml_client_currency_language']) ? $_COOKIE['wcml_client_currency_language'] : '';
    $batcache->unique['wcml_client_country'] = isset($_COOKIE['wcml_client_country']) ? $_COOKIE['wcml_client_country'] : '';
    $batcache->unique['wp-wpml_current_language'] = isset($_COOKIE['wp-wpml_current_language']) ? $_COOKIE['wp-wpml_current_language'] : '';

} elseif ( is_array( $batcache ) ) {

    // Merge WCML/WPML cookie names with existing noskip_cookies, or set them if not defined.
    $new_noskip = array(
        'wcml_client_currency',
        'wcml_client_currency_language',
        'wcml_client_country',
        'wp-wpml_current_language'
    );
    if ( !isset($batcache['noskip_cookies']) || !is_array($batcache['noskip_cookies']) ) {
        $batcache['noskip_cookies'] = $new_noskip;
    } else {
        $batcache['noskip_cookies'] = array_unique(array_merge($batcache['noskip_cookies'], $new_noskip));
    }

    // Merge WCML/WPML cookie values into the unique cache key components.
    if ( !isset($batcache['unique']) || !is_array($batcache['unique']) ) {
        $batcache['unique'] = array();
    }
    $batcache['unique']['wcml_client_currency'] = isset($_COOKIE['wcml_client_currency']) ? $_COOKIE['wcml_client_currency'] : '';
    $batcache['unique']['wcml_client_currency_language'] = isset($_COOKIE['wcml_client_currency_language']) ? $_COOKIE['wcml_client_currency_language'] : '';
    $batcache['unique']['wcml_client_country'] = isset($_COOKIE['wcml_client_country']) ? $_COOKIE['wcml_client_country'] : '';
    $batcache['unique']['wp-wpml_current_language'] = isset($_COOKIE['wp-wpml_current_language']) ? $_COOKIE['wp-wpml_current_language'] : '';
}
// End Batcache Customizations
```

### Option 2: Batcache customization for WPML – Using a Separate skip-cache.php File

If you prefer not to modify `wp-config.php` file directly:

- In the `wp-content `directory, create a new file named `skip-cache.php`
- Add the batcache customization code snippet below:

```
/**
 * Batcache Customizations for WCML/WPML
 *
 * Ensures Batcache respects WooCommerce Multilingual and WPML cookies by:
 * - Skipping cache when specific cookies are present (`noskip_cookies`)
 * - Using cookie values as part of the unique cache key (`unique`)
 */

// Batcache Customizations
global $batcache;

// Check if batcache params are in an object or an array, apply customizations accordingly
if ( is_object( $batcache ) ) {

    // Merge WCML/WPML cookie names with existing noskip_cookies, or set them if not defined.
    $new_noskip = array(
        'wcml_client_currency',
        'wcml_client_currency_language',
        'wcml_client_country',
        'wp-wpml_current_language'
    );
    if ( !isset($batcache->noskip_cookies) || !is_array($batcache->noskip_cookies) ) {
        $batcache->noskip_cookies = $new_noskip;
    } else {
        $batcache->noskip_cookies = array_unique(array_merge($batcache->noskip_cookies, $new_noskip));
    }

    // Merge WCML/WPML cookie values into the unique cache key components.
    if ( !isset($batcache->unique) || !is_array($batcache->unique) ) {
        $batcache->unique = array();
    }
    $batcache->unique['wcml_client_currency'] = isset($_COOKIE['wcml_client_currency']) ? $_COOKIE['wcml_client_currency'] : '';
    $batcache->unique['wcml_client_currency_language'] = isset($_COOKIE['wcml_client_currency_language']) ? $_COOKIE['wcml_client_currency_language'] : '';
    $batcache->unique['wcml_client_country'] = isset($_COOKIE['wcml_client_country']) ? $_COOKIE['wcml_client_country'] : '';
    $batcache->unique['wp-wpml_current_language'] = isset($_COOKIE['wp-wpml_current_language']) ? $_COOKIE['wp-wpml_current_language'] : '';

} elseif ( is_array( $batcache ) ) {

    // Merge WCML/WPML cookie names with existing noskip_cookies, or set them if not defined.
    $new_noskip = array(
        'wcml_client_currency',
        'wcml_client_currency_language',
        'wcml_client_country',
        'wp-wpml_current_language'
    );
    if ( !isset($batcache['noskip_cookies']) || !is_array($batcache['noskip_cookies']) ) {
        $batcache['noskip_cookies'] = $new_noskip;
    } else {
        $batcache['noskip_cookies'] = array_unique(array_merge($batcache['noskip_cookies'], $new_noskip));
    }

    // Merge WCML/WPML cookie values into the unique cache key components.
    if ( !isset($batcache['unique']) || !is_array($batcache['unique']) ) {
        $batcache['unique'] = array();
    }
    $batcache['unique']['wcml_client_currency'] = isset($_COOKIE['wcml_client_currency']) ? $_COOKIE['wcml_client_currency'] : '';
    $batcache['unique']['wcml_client_currency_language'] = isset($_COOKIE['wcml_client_currency_language']) ? $_COOKIE['wcml_client_currency_language'] : '';
    $batcache['unique']['wcml_client_country'] = isset($_COOKIE['wcml_client_country']) ? $_COOKIE['wcml_client_country'] : '';
    $batcache['unique']['wp-wpml_current_language'] = isset($_COOKIE['wp-wpml_current_language']) ? $_COOKIE['wp-wpml_current_language'] : '';
}
// End Batcache Customizations

```

- In your `wp-config.php`, file insert the following line `include_once __DIR__ . '/wp-content/skip-cache.php'; ` **immediately above** the line: ` /* That's all, stop editing! Happy blogging. */` then save the file

#### Clear Your Site’s Cache

After implementing the above changes, it’s essential to clear your site’s cache to experience the updates. You can follow Pressable’s guide on[ How to Clear Cache in WordPress](https://pressable.com/blog/how-to-clear-cache-in-wordpress/) for detailed instructions.​

You should see the response below in your site’s header to confirm that caching is working.

```
X-Ac: lhr _atomic_ams HIT<br></br>x-nananana: Batcache-Set
```

#### Check Your Site Header

- **Open your website in a browser** > Right-click anywhere on the page and select “Inspect”

- Go to the “Network” tab > Refresh the page

- Click on the first request (usually your domain)
- Go to the “Headers” section to view the response headers.

If you want to check via terminal or command line, you can use the below command:

`curl -I https://yoursite.com`