Appfog 数据库信息 https://docs.appfog.com/services/mysql#php

appfog.database.php

<?php 

$services_json = json_decode(getenv("VCAP_SERVICES"),true);
$mysql_config = $services_json["mysql-5.1"][0]["credentials"];
$username = $mysql_config["username"];
$password = $mysql_config["password"];
$hostname = $mysql_config["hostname"];
$port = $mysql_config["port"];
$db = $mysql_config["name"];
$link = mysql_connect("$hostname:$port", $username, $password);
$db_selected = mysql_select_db($db, $link);

echo "services_json:".$services_json."<br>";
echo "username:".$username."<br>";
echo "password:".$password."<br>";
echo "hostname:".$hostname."<br>";
echo "port:".$port."<br>";
echo "db:".$db."<br>";
echo "link:".$link."<br>";
 ?>