For Massacre:
       INVALID QUERY

<?php
$result = mysql_query('SELECT * WHERE 1=1');
if (!$result) {
    die('Invalid query: ' . mysql_error());
}

?>

             VALID QUERY
<?php
// DIS B VALID QUERY NIGGA
$username = 'root';
$password  = 'abcdefghijklmnopqrstuvwxyz';

$query = sprintf("SELECT username, password
    WHERE username='%s' AND password='%s'",
    mysql_real_escape_string($username),
    mysql_real_escape_string($password));

// ight so nao i b performin da query!1!1!!!
$result = mysql_query($query);

// did dis shit send?
if (!$result) {
    $message  = 'Invalid query: ' . mysql_error() . "\n";
    $message .= 'Whole query: ' . $query;
    die($message);
}

while ($row = mysql_fetch_assoc($result)) {
    echo $row['username'];
    echo $row['password'];
}

// END OF SCRIPT YOU NIGGER
mysql_free_result($result);
?>