Title: PHP 8 support
Last modified: September 20, 2022
---
# PHP 8 support
* [agtalpai](https://wordpress.org/support/users/agtalpai/)
* (@agtalpai)
* [3 years, 9 months ago](https://wordpress.org/support/topic/php-8-support-34/)
* Hi,
* is there a possibility that the plugin will be updated to support PHP 8?
Viewing 6 replies - 1 through 6 (of 6 total)
* [flashios09](https://wordpress.org/support/users/flashios09/)
* (@flashios09)
* [3 years, 8 months ago](https://wordpress.org/support/topic/php-8-support-34/#post-16093523)
* This is the patch for php8:
edit this file: **/path_to_wordpress/wp-content/
plugins/wp-rss-retriever/inc/lib/simplepie/library/SimplePie/Parse/Date.php:544**
* ```
// This is for php version 8:
// the php implode function now use the $separator as first param and the $array to implode as second param
// see https://www.php.net/manual/en/function.implode.php#refsect1-function.implode-changelog
$phpVersion = substr(phpversion(), 0, 1);
if ($phpVersion === '8') {
$this->day_pcre = '(' . implode('|', array_keys($this->day)) . ')';
$this->month_pcre = '(' . implode('|', array_keys($this->month)) . ')';
} elseif (in_array($phpVersion, ['5', '7'])) {
$this->day_pcre = '(' . implode(array_keys($this->day), '|') . ')';
$this->month_pcre = '(' . implode(array_keys($this->month), '|') . ')';
}
```
* [sydro](https://wordpress.org/support/users/sydro/)
* (@sydro)
* [3 years, 8 months ago](https://wordpress.org/support/topic/php-8-support-34/#post-16129038)
* This fix doesn’t work. I have this error with php8
* `[Mon Oct 24 15:03:16.831279 2022] [php:error] [pid 14035] [client 172.22.0.1:
44218] PHP Fatal error: Uncaught TypeError: call_user_func_array(): Argument #
1 ($callback) must be a valid callback, non-static method RSS_Retriever_Feed::
return_1() cannot be called statically in /var/www/html/wp-includes/class-wp-
hook.php:309\nStack trace:\n#0 /var/www/html/wp-includes/plugin.php(191): WP_Hook-
>apply_filters()\n#1 /var/www/html/wp-includes/feed.php(817): apply_filters()\
n#2 /var/www/html/wp-content/plugins/wp-rss-retriever/inc/classes/RSS_Retriever_Feed.
php(50): fetch_feed()\n#3 /var/www/html/wp-content/plugins/wp-rss-retriever/inc/
classes/RSS_Retriever_Feed.php(25): RSS_Retriever_Feed->retrieve_feed()\n#4 /
var/www/html/wp-content/plugins/wp-rss-retriever/inc/ajax/rss-retriever-ajax-
request.php(11): RSS_Retriever_Feed->__construct()\n#5 /var/www/html/wp-includes/
class-wp-hook.php(307): rss_retriever_ajax_request()\n#6 /var/www/html/wp-includes/
class-wp-hook.php(331): WP_Hook->apply_filters()\n#7 /var/www/html/wp-includes/
plugin.php(476): WP_Hook->do_action()\n#8 /var/www/html/wp-admin/admin-ajax.php(
187): do_action()\n#9 {main}\n thrown in /var/www/html/wp-includes/class-wp-hook.
php on line 309, referer: ....`
* [flashios09](https://wordpress.org/support/users/flashios09/)
* (@flashios09)
* [3 years, 8 months ago](https://wordpress.org/support/topic/php-8-support-34/#post-16129064)
* [@sydro](https://wordpress.org/support/users/sydro/) that’s another error, it
doesn’t have anything to do with the php8 support or the `implode` function changes(
params position)
I remember having this error too **but it was related to the
rss link used in the shortcode** ! This is what i would suggest, go to your shortcode,
copy the rss link, open a new tab in your browser, paste the rss link there,
if you don’t get the rss xml file, means you are using a wrong link, just fix
it 😉
- This reply was modified 3 years, 8 months ago by [flashios09](https://wordpress.org/support/users/flashios09/).
* [sydro](https://wordpress.org/support/users/sydro/)
* (@sydro)
* [3 years, 8 months ago](https://wordpress.org/support/topic/php-8-support-34/#post-16129095)
* Thanks for the reply. I found the bud! sorry
* [rapidasia](https://wordpress.org/support/users/rapidasia/)
* (@rapidasia)
* [3 years, 8 months ago](https://wordpress.org/support/topic/php-8-support-34/#post-16129177)
* [@flashios09](https://wordpress.org/support/users/flashios09/) Heroic fix, thanks
* FYI – paste the code over what’s on lines 544 and 545
* [Russ](https://wordpress.org/support/users/gfxdesigner/)
* (@gfxdesigner)
* [3 years, 6 months ago](https://wordpress.org/support/topic/php-8-support-34/#post-16276555)
* Thanks, [@flashios09](https://wordpress.org/support/users/flashios09/) for the
PHP8 patch!
Viewing 6 replies - 1 through 6 (of 6 total)
The topic ‘PHP 8 support’ is closed to new replies.
* 
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## Tags
* [Updates](https://wordpress.org/support/topic-tag/updates/)
* 7 replies
* 5 participants
* Last reply from: [Russ](https://wordpress.org/support/users/gfxdesigner/)
* Last activity: [3 years, 6 months ago](https://wordpress.org/support/topic/php-8-support-34/#post-16276555)
* Status: not resolved