Help with a part of code

PHP Code:

$receiver = isset($_POST[”receiver”]) ? $_POST[”receiver”] : false;
$res = mysqli_query($GLOBALS[”___mysqli_ston”], “SELECT acceptpms, email, notifs, last_access as la FROM users WHERE id=$receiver”) or sqlerr(__FILE__, __LINE__);
$user = mysqli_fetch_assoc($res);
if (strpos($user[’notifs’], ‘[pm]’) !== false){
$username = $CURUSER[”username”];
$body = <<<EOD
You have received a PM from $username!
You can use the URL below to view the message (you may have to login).
{$url/messages.php
—
{[’site_name’]}
EOD;
@mail($user[”email”], “{$lang[’message_received’]} ” . $username . “!”,
$body, “{$lang[’message_from’]} {[’site_email’]}”);
} 

so I have the code above that will allow […]

Original post by pwpx2