Can connect to Mysql via command line but not via browser

I have a MySQL database server and a separate web sever running Apache.  Bo=
th are running Centos 8.=20

I can connect to my database server from my web server via the command line=
, but I get permission denied whenever I try to connect to the server via a=
 browser.

Here is the code I'm running:
<?php
$servername =3D "192.168.10.XXX";
$username =3D "root";
$password =3D "123456789";
$conn =3D new mysqli($servername, $username, $password); if ($conn->connect=
_error) {
  die("Connection failed: " . $conn->connect_error); } echo "Connected succ=
essfully"; ?>

I SSH into my web server and run this command "php TestMySQL.php".  I recei=
ve the output of "Connected successfully".

When I attempt through my browser or curl, I receive the output of "Connect=
ion failed: Permission denied".

I can also connect to the remote database with the local mysql client.

Thank you all in advance for your help.