PHP If 语句中的其他语句

对php表示不满，似乎无法在网络上找到有关如何执行以下操作的任何信息。我需要在下面的代码中的 mysql 查询之后添加以下代码，但不确定该怎么做：

$membership_type = 'full_member';
if ($item_number == 150) { mysql_query("INSERT INTO members (membership_type) VALUES('". mysql_escape_string($membership_type) ."') ") or die(mysql_error());}

需要将其添加到 mysql 查询下方。

    if (!$fp) {
// HTTP ERROR
} else {
fputs ($fp, $header . $req);
while (!feof($fp)) {
$res = fgets ($fp, 1024);
if (strcmp ($res, "VERIFIED") == 0) {
// PAYMENT VALIDATED & VERIFIED!
$sender_email = $_POST['payer_email'];
$customerid = $_POST['custom'];
$item_name = $_POST['item_name'];
$item_number = $_POST['item_number'];
$payment_status = $_POST['payment_status'];
$payment_amount = $_POST['mc_gross'];
$payment_currency = $_POST['mc_currency'];
$txn_id = $_POST['txn_id'];
$receiver_email = $_POST['receiver_email'];


mysql_query("INSERT INTO paypal (sender_email, customerid, item_name, item_number, payment_status, payment_amount, payment_currency, txn_id, receiver_email) VALUES('". mysql_escape_string($sender_email) ."', '". mysql_escape_string($customerid) ."', '". mysql_escape_string($item_name) ."', '". mysql_escape_string($item_number) ."', '". mysql_escape_string($payment_status) ."', '". mysql_escape_string($payment_amount) ."', '". mysql_escape_string($payment_currency) ."', '". mysql_escape_string($txn_id) ."', '". mysql_escape_string($receiver_email) ."') ") or die(mysql_error());

}

让我知道我是否有任何意义。期待您的回复。