Title: Uncaught TypeError (PHP 8 issue?) Last modified: November 30, 2020 --- # Uncaught TypeError (PHP 8 issue?) * Resolved [quppa](https://wordpress.org/support/users/quppa/) * (@quppa) * [5 years, 6 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/) * I’m getting the following error when trying to activate version 2.8.15 of this plugin with WordPress 5.6 (RC1) and PHP 8.0.0: * ``` Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, string given in /var/www/html/blog/wp-content/plugins/urvanov-syntax-highlighter/util/class-urvanov-syntax-highlighter-util.php:663 Stack trace: #0 /var/www/html/blog/wp-content/plugins/urvanov-syntax-highlighter/util/class-urvanov-syntax-highlighter-util.php(672): UrvanovSyntaxHighlighterUtil::version_parts() #1 /var/www/html/blog/wp-content/plugins/urvanov-syntax-highlighter/class-urvanov-syntax-highlighter-plugin.php(1134): UrvanovSyntaxHighlighterUtil::version_compare() #2 /var/www/html/blog/wp-content/plugins/urvanov-syntax-highlighter/class-urvanov-syntax-highlighter-plugin.php(1326): Urvanov_Syntax_Highlighter_Plugin::update() #3 /var/www/html/blog/wp-admin/includes/plugin.php(2299): include('...') #4 /var/www/html/blog/wp-admin/plugins.php(191): plugin_sandbox_scrape() #5 {main} thrown in /var/www/html/blog/wp-content/plugins/urvanov-syntax-highlighter/util/class-urvanov-syntax-highlighter-util.php on line 663 ``` * I don’t see anything in the PHP 8 breaking changes list, but I wonder if they switched this warning to an error: [https://wiki.php.net/rfc/counting_non_countables](https://wiki.php.net/rfc/counting_non_countables) Viewing 15 replies - 1 through 15 (of 21 total) 1 [2](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/page/2/?output_format=md) [→](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/page/2/?output_format=md) * Plugin Author [urvanov](https://wordpress.org/support/users/urvanov/) * (@urvanov) * [5 years, 6 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13727663) * Strange error. I did not test the plugin in PHP 8 yet. * Looks that you are right, they changed the behaviour. I cannot fix and make the update right now. But I will try to do something on the weekend. * Plugin Author [urvanov](https://wordpress.org/support/users/urvanov/) * (@urvanov) * [5 years, 6 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13751080) * I tried it but I couldn’t start a fresh copy of WordPress with PHP 8. Maybe it is too early. * Thread Starter [quppa](https://wordpress.org/support/users/quppa/) * (@quppa) * [5 years, 6 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13752514) * I had some issues running WordPress 5.5, but pre-release WordPress 5.6 seems to be working fine. * Plugin Author [urvanov](https://wordpress.org/support/users/urvanov/) * (@urvanov) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13834704) * [@quppa](https://wordpress.org/support/users/quppa/) I have installed PHP 8 and wordpress 5.6 with the plugin. But I don’t see the errors. Maybe there some other conditions? - This reply was modified 5 years, 5 months ago by [urvanov](https://wordpress.org/support/users/urvanov/). * [worldsdream](https://wordpress.org/support/users/worldsdream/) * (@worldsdream) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13835513) * As [@quppa](https://wordpress.org/support/users/quppa/) mentioned, problems were with WP 5.5 and not 5.6. * I guess you can mark this as solved because everyone needs to update to the latest version. * Thank you [@quppa](https://wordpress.org/support/users/quppa/) for letting [@urvanov](https://wordpress.org/support/users/urvanov/) know. * Thread Starter [quppa](https://wordpress.org/support/users/quppa/) * (@quppa) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13835717) * I’m afraid I’m getting the same error with 2.8.16. * [Beherit](https://wordpress.org/support/users/beherit/) * (@beherit) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13835949) * Same problem for me but it appeared after the update updating from 2.8.15 to 2.8.16, now even downgrading doesen’t help :/ * [Beherit](https://wordpress.org/support/users/beherit/) * (@beherit) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13835987) * [@urvanov](https://wordpress.org/support/users/urvanov/) You should use this function to prevent this error: [https://www.php.net/manual/en/function.is-countable.php](https://www.php.net/manual/en/function.is-countable.php) * [Beherit](https://wordpress.org/support/users/beherit/) * (@beherit) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13839522) * Problem still exists on version 2.8.17. * [Beherit](https://wordpress.org/support/users/beherit/) * (@beherit) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13839558) * Maybe just use version_compare function from PHP instead of your own function? * Plugin Author [urvanov](https://wordpress.org/support/users/urvanov/) * (@urvanov) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13850728) * I don’t understand why I don’t see the error. What is the difference between your PHP and mine? * Plugin Author [urvanov](https://wordpress.org/support/users/urvanov/) * (@urvanov) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13850729) * Maybe some minor version difference * Plugin Author [urvanov](https://wordpress.org/support/users/urvanov/) * (@urvanov) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13857783) * [@beherit](https://wordpress.org/support/users/beherit/) , [@quppa](https://wordpress.org/support/users/quppa/) Tell please. Do you use the version from wordpress plugin repository or from github sources repository? * [Beherit](https://wordpress.org/support/users/beherit/) * (@beherit) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13857799) * [@urvanov](https://wordpress.org/support/users/urvanov/) I use version form wordpress plugin repository. Problem still exists, I can’t even go to site admin page :/ * `Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, string given in /.../public_html/wp-content/plugins/urvanov- syntax-highlighter/util/class-urvanov-syntax-highlighter-util.php:664 Stack trace:# 0 /.../public_html/wp-content/plugins/urvanov-syntax-highlighter/util/class-urvanov- syntax-highlighter-util.php(673): UrvanovSyntaxHighlighterUtil::version_parts()# 1 /.../public_html/wp-content/plugins/urvanov-syntax-highlighter/class-urvanov- syntax-highlighter-plugin.php(1134): UrvanovSyntaxHighlighterUtil::version_compare()# 2 /.../public_html/wp-content/plugins/urvanov-syntax-highlighter/class-urvanov- syntax-highlighter-plugin.php(1326): Urvanov_Syntax_Highlighter_Plugin::update()# 3 /.../public_html/wp-settings.php(388): include_once('...') #4 /.../public_html/ wp-config.php(94): require_once('...') #5 /.../public_html/wp-load.php(37): require_once('...')# 6 /.../public_html/wp-admin/admin.php(34): require_once('...') #7 /.../public_html/ wp-admin/index.php(10): require_once('...') #8 {main} thrown in /.../public_html/ wp-content/plugins/urvanov-syntax-highlighter/util/class-urvanov-syntax-highlighter- util.php on line 664` * [Beherit](https://wordpress.org/support/users/beherit/) * (@beherit) * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/#post-13857808) * Version form github have this same problem. Viewing 15 replies - 1 through 15 (of 21 total) 1 [2](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/page/2/?output_format=md) [→](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/page/2/?output_format=md) The topic ‘Uncaught TypeError (PHP 8 issue?)’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/urvanov-syntax-highlighter.svg) * [Urvanov Syntax Highlighter](https://wordpress.org/plugins/urvanov-syntax-highlighter/) * [Frequently Asked Questions](https://wordpress.org/plugins/urvanov-syntax-highlighter/#faq) * [Support Threads](https://wordpress.org/support/plugin/urvanov-syntax-highlighter/) * [Active Topics](https://wordpress.org/support/plugin/urvanov-syntax-highlighter/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/urvanov-syntax-highlighter/unresolved/) * [Reviews](https://wordpress.org/support/plugin/urvanov-syntax-highlighter/reviews/) * 21 replies * 4 participants * Last reply from: [urvanov](https://wordpress.org/support/users/urvanov/) * Last activity: [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-typeerror-php-8-issue/page/2/#post-13858402) * Status: resolved