Bug #81531

Warning "PHP extension mysqli not loaded" when using PostgreSQL

Added by Stephan Großberndt almost 3 years ago. Updated 2 months ago.

Must have
Install Tool
Target version:
Start date:
Due date:
% Done:


TYPO3 Version:
PHP Version:
Is Regression:
Sprint Focus:


If you use TYPO3 on a server with PostgreSQL which does not have the mysql php extensions installed the Install Tool complains about

PHP extension mysqli not loaded
TYPO3 CMS uses PHP extension mysqli but it is not loaded in your environment. Change your environment to provide this extension.

When using a PostgreSQL that extension is not necessary. The warning should only be displayed if a MySQL Connection is configured.

Related issues

Related to TYPO3 Core - Task #89794: Refactoring the database check in install tool Closed 2019-11-28
Related to TYPO3 Core - Epic #90719: PostgreSQL related issues Accepted 2020-03-10


#1 Updated by Manuel Selbach 7 months ago

  • Assignee set to Manuel Selbach

#2 Updated by Manuel Selbach 6 months ago

  • Related to Task #89794: Refactoring the database check in install tool added

#3 Updated by Christian Eßl 3 months ago

  • Related to Epic #90719: PostgreSQL related issues added

#4 Updated by Manuel Selbach 3 months ago

This issue is resolved in the current release of 10.3. with a refactored process in the install tool to proof database requirements.

For more details have a look into the linked issue: https://forge.typo3.org/issues/89794

#5 Updated by Manuel Selbach 3 months ago

  • Status changed from New to Needs Feedback

@Stephan Großberndt May I ask you to check the implementation mentioned above? This will not be backported to version 8 or 9.

#6 Updated by Georg Ringer 2 months ago

  • Status changed from Needs Feedback to Closed

closing the issue as solved in 10

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