MySQL version, WP requirements and 500 error

Hi,

Yes if the required PHP and MYSQL version is not present on the server then latest wordpress may not get installed or may cause problems after installation.

Thanks

Thanks Clarion. Specifically would you expect it to be a 500 error?

Switched on PHP debugging and got this:

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/healthw1/public_html/revamp/wp-includes/wp-db.php:1520 ... thrown in /home/healthw1/public_html/revamp/wp-includes/wp-db.php on line 1520

Reckon that’s the MySQL version at fault?

I just want to point the finger of blame in the correct direction!

Hi Jason,

Please check if MySQL service is running.

Try checking to see if the PHP MySQL extension module is being loaded

<?php
phpinfo();
?>

If it is not there, add the following line to the php.ini file and restart the apache.

extension=php_mysql.dll

P.S. I would advise to consider MySQL extension as deprecated and to use MySQLi or even PDO for working with databases

Thanks

Thanks for the clues Clarion, all fixed now.

The MySQL wasn’t running because a box on the PHP 7 version chooser in cPanel was unticked.

Glad your problem is solved. ??

Hi Jason,

I am getting the same error. Which box did you need to check? There are several MySQL options checked and unchecked in my cPanel and I can’t work out which one I need to activate.

Many Thanks!

Sorry, I really can’t remember. It was three months ago!

And bear in mind that error message on your site could be caused by many things, not necessarily the same that caused mine.

Thanks for your reply Jason. After testing it seems nd_mysqli get it working for me.