Instalando o magento, obtém um erro de conexão com o banco de dados.

Tente este script que testa sua conexão e relata o erro real do MySQL. Pode ser útil determinar se as credenciais que você recebeu funcionarão ou qual parte do processo está falhando. Como você o está usando em um host remoto, recomendo que você codifique o nome de usuário e a senha do banco de dados para evitar passá-los de forma clara pela Internet aberta.

(Nota:Não é meu próprio trabalho - o script vem de webune.com)

<?php
###################################### C O P Y R I G H T S ####################################
# THIS SCRIPT IS DISTRIBUTED BY WEBUNE.COM UNDER LICENSE UNDER THE GPL RULES
# PLEASE DO NOT REMOVE THIS MESSAGE IN SUPPORT OF OUR HARD WORK TO CONTINUE TO PROVIDE FREE SUPPORT
###############################################################################################
# OK, HERE WE GO
# Use this varialble if you are using an installation script
$step = $_GET['step'];
if (!$step) {
    $page_title = 'Form';
}
else{
    $page_title = 'Test MySQL step '.$step;
}
############## BEGIN FUNCTIONS ##############################
# FUNCTION TO TEST USERNAME AND PASSWORD IN MYSQL HOST
function db_connect($server, $username, $password, $link = 'db_link') {
    global $$link, $db_error;
    $db_error = false;
    if (!$server) {
        $db_error = 'No Server selected.';
        return false;
    }
    $$link = @mysql_connect($server, $username, $password) or $db_error = mysql_error();
    return $$link;
}
# FUNCTION TO SELECT DATABASE ACCESS
function db_select_db($database) {
    echo mysql_error();
    return mysql_select_db($database);
}
# FUNCTION TO TEST DATABASE ACCESS
function db_test_create_db_permission($database) {
    global $db_error;
    $db_created = false;
    $db_error = false;
    if (!$database) {
        $db_error = 'No Database selected.';
        return false;
    }
    if ($db_error) {
        return false;
    } else {
        if ([email protected]_select_db($database)) {
            $db_error = mysql_error();
            return false;
        }else {
            return true;
        }
    return true;
    }
}

function step1 ($error) {
    echo '<h1 style="color:#FF0000">'.$error.'</h1><hr>';
?>
<form name="form1" method="post" action="<?php $_SERVER['PHP_SELF']; ?>?step=2">
<table border="0" cellspacing="5" cellpadding="5">
<tr>
<td><div align="right">mysql hostname:</div></td>
<td><input name="server" type="text" value="<?php echo $_REQUEST['server']; ?>">
(usually &quot;localhost&quot; or enter IP Address of MySQL Server)</td>
</tr>
<tr>
<td><div align="right">mysql username:</div></td>
<td><input type="text" name="username" value="<?php echo $_REQUEST['username']; ?>"></td>
</tr>
<tr>
<td><div align="right">mysql username password:</div></td>
<td><input type="text" name="password" value="<?php echo $_REQUEST['password']; ?>"></td>
</tr>
<tr>
<td><div align="right">mysql database name:</div></td>
<td><input type="text" name="database" value="<?php echo $_REQUEST['database']; ?>"></td>
</tr>
<tr>
<td colspan="2"><input type="submit" name="Submit" value="Submit"></td>
</tr>
</table>
</form>
<?php
}
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Webune MYSQL TEST - <?php echo $page_title; ?></title>
</head>
<body>
<h1><?php echo $page_title; ?></h1>
<?php
############## END FUNCTIONS ##############################
switch ($step) {
    case '2':
        if ($_REQUEST['server']) {
    $db = array();
    $db['DB_SERVER'] = trim(stripslashes($_REQUEST['server']));
    $db['DB_SERVER_USERNAME'] = trim(stripslashes($_REQUEST['username']));
    $db['DB_SERVER_PASSWORD'] = trim(stripslashes($_REQUEST['password']));
    $db['DB_DATABASE'] = trim(stripslashes($_REQUEST['database']));
    $db_error = false;
    db_connect($db['DB_SERVER'], $db['DB_SERVER_USERNAME'], $db['DB_SERVER_PASSWORD']);
    if ($db_error == false) {
        if (!db_test_create_db_permission($db['DB_DATABASE'])) {
            $error = $db_error;
        }
    } else {
        $error = $db_error;
    }
    if ($db_error != false) {
        $error = "failed";
        echo step1($db_error);
    } else {
        echo '<h1 style="color:green">Congratulations!</h1>
        Connected Successfuly to datbase <strong>
        <a href="https://www.webune.com/forums/how-to-test-mysql-database-connection.html">Continue &gt;&gt; </a></strong>';
    }
        } else {
            $error = "ERROR: please provide a hostanme";
            echo step1($error);
        }
    break;

    default:
    echo step1('Step 1');
    break;
}
?>
<div align="center">
<img src="http://www.webune.com/images/headers/default_logo.jpg">
</div>
<div align="center">
Script Courtesy of
<a href="https://www.webune.com">Webune PHP/Mysql Hosting</a></div>
</body>
</html>