it is passed...
How you learned where also what error? Very interesting.
And it climbed to you on the server and saw that in to legendary 17th line there is an attempt of connection with basis.
Here approximately so
$link = mysqli_connect ("127.0.0.1", "my_user","my_password","my_db");
Here here it is possible to read.
And further the colleague looked in your configuration file php.ini and saw that the extension is commented out.
And the file dll for the extension is not present. And the directory for dll with extensions is specified not that. In general, all is bad, and tendencies to improving is not viewed in the near future.
If to look in Google here kosher arguing as with it to be lies quite to itself.
And still it is necessary to specify, version PHP at you 5th or 7th, tore Apache on Windows or Linux - actually, it is necessary to begin with it.
But under your comment it is clear that Windows 10, Apache 2.4 and mysql 5.7. Yes?