How can I enable the MySQLi extension in PHP 7?

The MySQLi extension has been bundled and enabled by default since PHP 5.3.0, so it is already active in PHP 7 and PHP 8. If you encounter a "Call to undefined function mysqli_connect()" error, it usually means the extension is disabled in your php.ini file or missing from your installation.

To enable it manually, follow these steps:

1. Open your PHP configuration file (php.ini).
2. Find the line that reads: ;extension=mysqli
3. Remove the semicolon (;) from the beginning of the line to uncomment it. It should now look like this:

   extension=mysqli

   Copy
4. Save the changes to your php.ini file.
5. Restart your web server for the changes to take effect.

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We hope this helps! Let us know if you have any other questions.