A simple PHP script to test for multiple DB connections in PHP

genericdb.php

<?php
// File created by Reelix (HTB: Reelix)

// Enter your Host, username, password, database below.
$host = "localhost";
$dbuser = "dbusername";
$dbpass = "dbpassword";
$db = "";
$query = "";
if (isset($_GET["db"]))
{
        $db = $_GET["db"];
}
if (isset($_GET["SQL"]))
{
        $query = $_GET["SQL"];
}

TestMySQL($host, $db, $dbuser, $dbpass, $query, $db);
TestPosgreSQLNative($host, $db, $dbuser, $dbpass, $query);
TestPosgreSQLPDO($host, $db, $dbuser, $dbpass, $query);

function TestMySQL($host, $db, $dbuser, $dbpass, $query, $thedb)
{
	if (function_exists("mysqli_connect"))
	{
		$link = mysqli_connect($host,$dbuser,$dbpass, $thedb);
		$link = mysqli_connect($host,$dbuser,$dbpass, $thedb);
                if (mysqli_connect_errno())
                {
                        echo "MySQL - Failed!";
                }
                else
                {
                        echo "MySQL - 3306 - Connected!";
                        $result = mysqli_query($link, $query);
                        while( $row = mysqli_fetch_array($result) )
                        {
                                print_r($row);
                        }
                }
	}
	else
	{
		echo "No mysqli_connect - Skipping MySQL<br />";
	}
}

function TestPosgreSQLNative($host, $db, $dbuser, $dbpass, $query)
{
	if (function_exists("pg_connect"))
	{
		$conn = pg_connect("host=" . $host . " dbname=" . $db . " user=" . $dbuser . " password=" . $dbpass);
		if($conn)
		{
			echo "PosgreSQLNative - Connected!<br />";
			if (isset($query))
			{
				$result = pg_query($conn, $query);
				var_dump(pg_fetch_all($result));
			}
		}
		else
		{
			echo "PosgreSQLNative - Failed!<br />";
		}
	}
	else
	{
		echo "No pg_connect - Skipping PosgreSQLNative<br />";
	}
	
}

function TestPosgreSQLPDO($host, $db, $dbuser, $dbpass, $query)
{
	if (function_exists("PDO"))
	{
		$myPDO = new PDO("pgsql:host=" . $host . ";dbname=" . $db, $dbuser, $dbpass);
	}
	else
	{
		echo "No PDO - Skipping PosgreSQLPDO<br />";
	}
	// TODO: Check if it succeeded
}

// TODO: MSSQL

// Try PostGRE
/*
 $query = "SELECT table_name AS table_name FROM information_schema.tables";
 $result = mysqli_query($con, $query);
 while ($row = mysqli_fetch_array($result)){
echo $row['table_name'] . " - ";
// echo "Username: " . $row['username'] . " -- " . $row['password'] . " -- " . $row['email'] . " -->Woof";
}*/

?>