Question: how to purge cache programmatically from PHP using swcfpc_purge_cache

wabetainfo
(@wabetainfo)

8 months, 3 weeks ago

Hi! I’m trying to programmatically clear the cache from a PHP file. Here’s what I have so far:

function clear_cache($urls) {
$wp_load_path = ‘dirname( __FILE__ ) . ‘/../wp-load.php’ ;
if (file_exists($wp_load_path)) {
require_once($wp_load_path);
do_action(“swcfpc_purge_cache”, $urls);
}
}
clear_cache(array(‘https://example.com/page1/’, ‘https://example.com/page2/’));

The syntax seems correct according to the plugin documentation and changelog. However, when I run this code, WordPress throws a generic error. I do not know if this is a bug with the swcfpc_purge_cache action. Could someone help me, please? Thanks.

Viewing 6 replies - 1 through 6 (of 6 total)

Plugin Support Kush
(@kushnamdev)

8 months, 3 weeks ago
Hi @wabetainfo,

Please try this code and let us know if this solves your issue –
```
function clear_cache($urls) {
    // build the path to wp-load.php
    $wp_load_path = dirname(__FILE__) . '/../wp-load.php';

    if (file_exists($wp_load_path)) {
        require_once $wp_load_path;
        // trigger the action with your URLs
        do_action('swcfpc_purge_cache', $urls);
    }
}

// example call
clear_cache(array(
    'https://example.com/page1/',
    'https://example.com/page2/'
));
```
Best regards
Thread Starter wabetainfo
(@wabetainfo)

8 months, 3 weeks ago

Hi @kushnamdev
Thanks for your message. I don’t understand the difference between my code and yours (mine just had a syntax error once pasted here, but it was correct in my PHP file). however, I just tested the code and the page still reports “There has been a critical error on this website.”

The log says:

[08-Sep-2025 20:19:25 UTC] PHP Warning: Trying to access array offset on null in /home/website/public_html/wp-content/advanced-cache.php on line 869
[08-Sep-2025 20:19:25 UTC] PHP Warning: Trying to access array offset on null in /home/website/public_html/wp-content/advanced-cache.php on line 829
[08-Sep-2025 20:19:25 UTC] PHP Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /home/website/public_html/wp-content/advanced-cache.php:831
Stack trace: 0 /home/website/public_html/wp-content/advanced-cache.php(77): swcfpc_fallback_cache_is_cookie_to_exclude()

Thread Starter wabetainfo
(@wabetainfo)

8 months ago

Hi @kushnamdev
Do you have any idea how to do it? Although the code seems correct, the website crashes when I try purging the cache. Thanks.
Plugin Support Kush
(@kushnamdev)

7 months, 3 weeks ago
Hey @wabetainfo,

We were able to replicate the issue you shared and reported to our team for fix. In the meantime you can add this code in your advanced-cache.php file to solve the error.
```
if ( defined( 'SWCFPC_SKIP' ) {
  return;
}
```
I hope this helps, thank you!
Thread Starter wabetainfo
(@wabetainfo)

6 months ago

Hi @kushnamdev
Unfortunately, the latest updates still do not implement a fix for the issue. Additionally, I’m not even sure if it will work, as I experience the same critical error even after adding that code to the advanced-cache.php file:

if ( defined( ‘SWCFPC_SKIP’ )) {

return;

}

Thread Starter wabetainfo
(@wabetainfo)

4 months, 2 weeks ago

Hi @kushnamdev

Is there news about this issue? it’s been more than 4 months from my initial report. Thanks!

Viewing 6 replies - 1 through 6 (of 6 total)

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