all. I have a problem retrieving certain POST values incoming to a script I have set up. The POST keys are not changeable as they come from a request from PayPal. However I need some way to get these values dynamically.
When a person purchases multiple items, I get POST values returned such as:
item_name=foo
item_name1=bar
item_name2=blah
I was thinking that I'll have to do some sort of Regular Expression to get the values, but I'm not sure about the syntax, or if it's even possible to use RegEx on a superglobal.
maybe something like:
$exp = "/item_name(d+)/";
foreach($_POST as $key => $val)
{
preg_match($exp,$key,$match);
}
As you can tell, I'm really bad with RegEx's. Any help would be greatly appreciated. :)
--EDIT--
Okay, there's two main POST keys that I need to catch. The problem is there may be any number (positive integer) after the key name:
item_name
item_name1
item_name2
item_number
item_number1
item_number2
But the ending digit can go all the way to 10, depending upon the number of products purchased. What I need to do is grab the values for each one of these, and add each item_number to a string to be inserted into a transaction table in my database. Perhaps something closer to:
$itms = '';
foreach($_POST as $key => $val)
{
if (strpos($key, 'item_name') === 0)
{
if($itms = '')
{
$itms = $val;
}
else
{
$itms .= ','.$val;
}
}
// don't really want to do it like this because i'd have to do it 10 times
if (strpos($key, 'item_name1') === 0)
{
if($itms = '')
{
$itms = $val;
}
else
{
$itms .= ','.$val;
}
}
}
// insert into DB after collecting all values
And yes, this is from an IPN.
--EDIT 2 -- This is what I have for my IPN listener script:
case 'ipnHandle' :
$header = '';
$retArray = array();
$req = 'cmd=_notify-validate';
foreach ($_POST as $key => $value)
{
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.0
";
$header .= "Content-Type: application/x-www-form-urlencoded
";
$header .= "Content-Length: " . strlen($req) . "
";
$fp = fsockopen ('ssl://www.sandbox.paypal.com', 443, $errno, $errstr, 30);
// assign posted variables to local variables
$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'];
$payer_email = $_POST['payer_email'];
if (!$fp)
{
$err_msg = 'Could not open the Paypal site to Verify Transaction';
}
else
{
fputs ($fp, $header . $req);
while (!feof($fp))
{
$res = fgets ($fp, 1024);
if (strcmp ($res, "VERIFIED") == 0)
{
if($_POST['receiver_email'] == "chaoskreator@gmail.com")
{
if($_POST['payment_status'] == 'Completed')
{
$sql = 'SELECT transaction_id FROM '.SHOP_TRANS_TABLE.' WHERE transaction_pid = '.$_POST['txn_id'];
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
if($row != 0 && $row != null)
{
$id_exp = '/^item_number(\d*)$/';
$qty_exp = '/^quantity(\d*)$/';
$price_exp = '/^mc_gross(\d*)$/';
$items = array();
$qtys = array();
$prices = array();
foreach($_POST as $key => $val)
{
$match = Array();
if(preg_match($id_exp, $key, $match))
{
$items[] = $val;
}
if(preg_match($qty_exp, $key, $match))
{
$qtys[] = $val;
}
if(preg_match($price_exp, $key, $match))
{
$prices[] = $val;
}
}
}
}
}
$itmStr = implode(",", $items);
$qtyStr = implode(",", $qtys);
$priceStr = implode(",", $prices);
$data = '';
$file = "verifyLog.txt";
$fh = fopen($file, "a+");
foreach($_POST as $key => $value)
{
if($data == '')
{
$data = '['.$key.']'.$value;
}
else
{
$data .= ',['.$key.']'.$value;
}
}
$data .= "
".$itmStr."
".$qtyStr."
".$priceStr;
fwrite($fh, $data);
fclose($fh);
}
else if (strcmp ($res, "INVALID") == 0)
{
$data = '';
$file = "failLog.txt";
$fh = fopen($file, "a+");
foreach($_POST as $value)
{
if($data == '')
{
$data = '['.$key.']'.$value;
}
else
{
$data .= ',['.$key.']'.$value;
}
}
fwrite($fh, $data);
fclose($fh);
}
}
fclose ($fp);
}
break;
And this is the response ans logged to verifyLog.txt, with no comma-delimited string appended to the end...:
[test_ipn]1,[payment_type]instant,[payment_date]20:47:04 Apr 19, 2011 PDT,[payment_status]Completed,[payer_status]verified,[first_name]John,[last_name]Smith,[payer_email]buyer@paypalsandbox.com,[payer_id]TESTBUYERID01,[business]seller@paypalsandbox.com,[receiver_email]seller@paypalsandbox.com,[receiver_id]TESTSELLERID1,[residence_country]US,[item_name]something,[item_number]AK-1234,[item_name1]somethingElse,[item_number1]1234346dfg,[quantity]1,[quantity1]1,[shipping]8.50,[tax]2.02,[mc_currency]USD,[mc_fee]0.44,[mc_gross]15.34,[mc_gross_1]12.34,[mc_handling]2.06,[mc_handling1]1.67,[mc_shipping]3.02,[mc_shipping1]1.02,[txn_type]cart,[txn_id]4420347,[notify_version]2.4,[custom]xyz123,[invoice]abc1234,[charset]windows-1252,[verify_sign]XXXXXXXXXXXX
This is drinving me nuts. lol
