WordPress itself supports PHP 7.2 (at least I assume you are using a fairly recent version of WP). Make sure your environment has either MySQL 5.6+ or MariaDB 10+.

For what is worth, I encountered the same error and the issue was solved by enabling the nd_mysqli extension in the PHP 7 configuration, and disabling the mysqli one.

Glad it helped!

I encountered the error when I upgraded to PHP 7 while having the W3 Total Cache “Database cache” enabled.

Maybe you’ve played around with W3TC today?

See for reference: https://wordpress.org/support/topic/database-cache-causing-503-errors-when-upgrading-to-php-7/

Hi

I’m creating my first site and came upon the error below.
i had created a first page on my domain and i was stuck somewhere unable to edit it, so i deleted all my files on that and started a new website on the same domain.
The problem is, the new website is not accessible.
i have not downloaded anything else apart from wordpress so i dont think the error i have is related to the php download described above

I’m seeing lots of delete.wpm…stuff in here and i’m not sure how to proceed

The error is:

PHP Fatal error: Uncaught Error: Call to undefined function get_transient() in /home/upku9mvvkvf0/public_html/deleteme.wpmfgw.php:16
Stack trace:
#0 {main}
thrown in /home/upku9mvvkvf0/public_html/deleteme.wpmfgw.php on line 16
[14-Apr-2019 04:29:43 UTC] PHP Fatal error: Uncaught Error: Call to undefined function get_transient() in /home/upku9mvvkvf0/public_html/deleteme.wpkq1x.php:16
Stack trace:
#0 {main}
thrown in /home/upku9mvvkvf0/public_html/deleteme.wpkq1x.php on line 16
[14-Apr-2019 04:29:43 UTC] PHP Fatal error: Uncaught Error: Call to undefined function get_transient() in /home/upku9mvvkvf0/public_html/deleteme.wppsmo.php:16
Stack trace:
#0 {main}
thrown in /home/upku9mvvkvf0/public_html/deleteme.wppsmo.php on line 16

please assist me to solve this.
Kind Regards

UPDATE
i just realized that i signed up to linux hosting with cpanel (on godaddy)….while my pc is on windows
oh well!!!!
let me now try to resolve the new problem :/

• This reply was modified 2 years, 5 months ago by fawzia.
• This reply was modified 2 years, 5 months ago by fawzia.

I am throwing this error. Where exactly can I toggle this setting to change mysqli to nd_mysqli?

Can you tell me how can I enable the nd_mysqli extension please?

Thank you.

Please help with this same issue, I have a Apache and PHP 7.4.5 running on a Windows 10 machine. I was still trying to install wordpress when I encountered an error

There has been a critical error on your website.

Learn more about debugging in WordPress.

I enabled debugging and entered the db details on the wp-config files manually but then I started getting this error.

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in C:\Apache24\htdocs\clickmedia\wp-includes\wp-db.php:1658 Stack trace: #0 C:\Apache24\htdocs\clickmedia\wp-includes\wp-db.php(631): wpdb->db_connect() #1 C:\Apache24\htdocs\clickmedia\wp-includes\load.php(426): wpdb->__construct(‘admin’, ‘081447Addax’, ‘clickmedia’, ‘127.0.0.1’) #2 C:\Apache24\htdocs\clickmedia\wp-settings.php(126): require_wp_db() #3 C:\Apache24\htdocs\clickmedia\wp-config.php(90): require_once(‘C:\\Apache24\\htd…’) #4 C:\Apache24\htdocs\clickmedia\wp-load.php(37): require_once(‘C:\\Apache24\\htd…’) #5 C:\Apache24\htdocs\clickmedia\wp-blog-header.php(13): require_once(‘C:\\Apache24\\htd…’) #6 C:\Apache24\htdocs\clickmedia\index.php(17): require(‘C:\\Apache24\\htd…’) #7 {main} thrown in C:\Apache24\htdocs\clickmedia\wp-includes\wp-db.php on line 1658

I have tried to follow @fcolombo’s suggestion but
1. I dont have the PHP configuration utility you refer to. So I edited the PHP.ini file
2. I can’t find nd_mysql as stated

I only found this line which I uncommented.

extension=mysqli

there is also a this line
[mysqlnd]
with other configurations for mysqlnd, could this be the same as nd_mysql?

Your help would be much appreciated. Stuck trying to to sort this out for hours