What should I do if linux php cannot connect to the mysql database?

Solution to the problem that linux php cannot connect to the mysql database: 1. Execute the command "apt install php-mysql"; 2. Restart the apache2 server by executing "service apache2 restart".

The operating environment of this article: linux5.9.8 system, PHP7.2 version, DELL G3 computer

linux php cannot connect to mysql What about the database?

php cannot connect to mysql database in Linux (Ubuntu) environment

The reason is most likely that the php-mysql module is not installed;

The solution is as follows:

apt install php-mysql

After the installation is completed, execute the following command to restart the apache2 server

service apache2 restart

The following is the rendering:

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