尝试将EC2服务器连接到RDS mySQL时出错

Question

when i call a PHP file (it just echos some text) in my /var/www/html directory in my Ubuntu server it works. When i try to run this PHP script in my browser (try to connect to my EC2 database):

<?php

$con = mysql_connect("phpmyadmin.cvw71h2krjrb.us-east-1.rds.amazonaws.com:3306",root,"phpmyadmin") or die(mysql_error());
echo "Database connected.";

?>

i get this error:

Access denied for user 'root'@'172.31.56.54' (using password: YES)

My security group is wide open and i know everything works because i can sign into phpMyAdmin and see my databases and i can echo PHP files.

how do i properly connect to a RDS database from a EC2 Ubuntu server via PHP? or is there something wrong with my code? Thanks!

Answer 1

It should be like this, remove :3306 from phpmyadmin.cvw71h2krjrb.us-east-1.rds.amazonaws.com:3306 and username should be surronded by double quotation( "root" ):

<?php
$con = mysql_connect("phpmyadmin.cvw71h2krjrb.us-east-1.rds.amazonaws.com","root","phpmyadmin") or die(mysql_error());
echo "Database connected.";
?>