I’m a but confused atm, I found this PayPal class online and it works great in PHP 5.6 with callback working perfectly but when i upgraded to PHP 7 and tried to do a payment everything still worked except the bit that says Completed|Failed, the class has an email func and all which only sends if purchase is successful but for some reason it doesn’t work.
I thought it might of been an error so i deleted all the tables in the db and tried again then it worked for the id = 1 so i thought woo its fixed but i thought id try it again just to be sure but then the callback came back as a fail again so im unsure why.
My Code:
public function add($userID,$amount,$product='0',$type,$callback){
global $crypt;
global $user;
$date = date("Y-m-d");
$userEnc = $userID;
$userID = $crypt->decrypt($userID,'USER');
$add = $this->db->prepare("INSERT INTO " . PFX . "transactions (`id`, `user_id`, `amount`,`product`,`type`,`callback`,`date`) VALUES (NULL, '$userID' , '$amount', '$product', '$type','$callback','$date')");
$add->execute();
$trans_id = $this->db->lastInsertId();
if($add){
if($_SESSION['payment']['use_prepaid']){
$userDetails= $user->details($userEnc);
$balance = $userDetails['balance'] - $amount;
$update = $user->update($userEnc,'balance',$balance);
if($update ){
return $crypt->encrypt($trans_id ,'TRANSACTION');
} else {
$this->error = "Oops something wrong happened. Please try later.";
return false;
}
}
return $crypt->encrypt($trans_id ,'TRANSACTION');
}
$this->error = "Oops something wrong happened. Please try later.";
return false;
}
Above is the function responsible for inserting the transaction
<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
require_once('../config-user.php');
$paypal_email = 'test@test.com'; // Set Your Paypal Email HERE
$redir = $_SESSION['payment']['redir'];
if(isset($_REQUEST) && isset($_REQUEST['crf'])){
$order_id= $_REQUEST['transaction_id'];
$a_amount = $_REQUEST['amount'];
$c_amount = $_REQUEST['amount'];
$detail = $_REQUEST['detail'];
$amount = $_REQUEST['amount'];
$admin_curr = $_REQUEST['currency'];
$chk_curr = $_REQUEST['currency'];
}
class paypal_class {
var $last_error;
var $ipn_log;
var $ipn_log_file;
var $ipn_response;
var $ipn_data = array();
var $fields = array();
function __construct() {
$this->paypal_url = 'https://www.paypal.com/cgi-bin/webscr';
$this->last_error = '';
$this->ipn_log_file = '.ipn_results.log';
$this->ipn_log = true;
$this->ipn_response = '';
$this->add_field('rm','2');
$this->add_field('cmd','_xclick');
}
function add_field($field, $value) {
$this->fields["$field"] = $value;
}
function submit_paypal_post() {
echo "<html>\n";
echo "<head><title>Processing Order...</title></head>\n";
echo "<body>\n";
echo "<center><h2>Please wait, your order is being processed and you";
echo " will be redirected to the paypal website.</h2></center>\n";
echo " <center><img src=\"../img/gateway.gif\"></center>\n";
echo "<form method=\"post\" name=\"paypal_form\" ";
echo "action=\"".$this->paypal_url."\">\n";
foreach ($this->fields as $name => $value) {
echo "<input type=\"hidden\" name=\"$name\" value=\"$value\"/>\n";
}
echo "<center><br/><br/>If you are not automatically redirected to ";
echo "paypal within 5 seconds...<br/><br/>\n";
echo "<input type=\"submit\" value=\"Click Here\"></center>\n";
echo "</form>\n";
echo "</body></html>\n";
}
function validate_ipn() {
$url_parsed=parse_url($this->paypal_url);
$post_string = '';
foreach ($_POST as $field=>$value) {
$this->ipn_data["$field"] = $value;
$post_string .= $field.'='.urlencode(stripslashes($value)).'&';
}
$post_string.="cmd=_notify-validate"; // append ipn command
// open the connection to paypal
$fp = fsockopen($url_parsed[host],"80",$err_num,$err_str,30);
if(!$fp) {
// could not open the connection. If loggin is on, the error message
// will be in the log.
$this->last_error = "fsockopen error no. $errnum: $errstr";
$this->log_ipn_results(false);
return false;
} else {
// Post the data back to paypal
fputs($fp, "POST $url_parsed[path] HTTP/1.1\r\n");
fputs($fp, "Host: $url_parsed[host]\r\n");
fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
fputs($fp, "Content-length: ".strlen($post_string)."\r\n");
fputs($fp, "Connection: close\r\n\r\n");
fputs($fp, $post_string . "\r\n\r\n");
// loop through the response from the server and append to variable
while(!feof($fp)) {
$this->ipn_response .= fgets($fp, 1024);
}
fclose($fp); // close connection
}
if (eregi("VERIFIED",$this->ipn_response)) {
// Valid IPN transaction.
$this->log_ipn_results(true);
return true;
} else {
// Invalid IPN transaction. Check the log for details.
$this->last_error = 'IPN Validation Failed.';
$this->log_ipn_results(false);
return false;
}
}
function log_ipn_results($success) {
if (!$this->ipn_log) return; // is logging turned off?
// Timestamp
$text = '['.date('m/d/Y g:i A').'] - ';
// Success or failure being logged?
if ($success) $text .= "SUCCESS!\n";
else $text .= 'FAIL: '.$this->last_error."\n";
// Log the POST variables
$text .= "IPN POST Vars from Paypal:\n";
foreach ($this->ipn_data as $key=>$value) {
$text .= "$key=$value, ";
}
// Log the response from the paypal server
$text .= "\nIPN Response from Paypal Server:\n ".$this->ipn_response;
// Write to log
$fp=fopen($this->ipn_log_file,'a');
fwrite($fp, $text . "\n\n");
fclose($fp); // close file
}
function dump_fields() {
// Used for debugging, this function will output all the field/value pairs
// that are currently defined in the instance of the class using the
// add_field() function.
echo "<h3>paypal_class->dump_fields() Output:</h3>";
echo "<table width=\"95%\" border=\"1\" cellpadding=\"2\" cellspacing=\"0\">
<tr>
<td bgcolor=\"black\"><b><font color=\"white\">Field Name</font></b></td>
<td bgcolor=\"black\"><b><font color=\"white\">Value</font></b></td>
</tr>";
ksort($this->fields);
foreach ($this->fields as $key => $value) {
echo "<tr><td>$key</td><td>".urldecode($value)." </td></tr>";
}
echo "</table><br>";
}
}
$p = new paypal_class; // initiate an instance of the class
$p->paypal_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr'; // testing paypal url
//$p->paypal_url = 'https://www.paypal.com/cgi-bin/webscr'; // paypal url
// setup a variable for this script (ie: 'http://www.micahcarrick.com/paypal.php')
$this_script = 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];
// if there is not action variable, set the default action of 'process'
if (empty($_GET['action'])) $_GET['action'] = 'process';
switch ($_GET['action']) {
case 'process': // Process and order...
$p->add_field('business', $paypal_email);
$p->add_field('return', $this_script.'?action=success');
$p->add_field('cancel_return', $this_script.'?action=cancel');
// $p->add_field('notify_url', $this_script.'?action=ipn');
$p->add_field('item_name', $detail);
$p->add_field('amount', $amount);
$p->submit_paypal_post(); // submit the fields to paypal
break;
case 'success': // Order was successful...
if(isset($_SESSION['payment']['id'] )){
$order_id = $_SESSION['payment']['id'] ;
}else{
$order_id = 0;
$_SESSION['payment']['id'] = $order_id;
}
switch ($_POST['payment_status']){
case 'Completed':
$transaction->update($_SESSION['payment']['id'] ,'callback','1');
if($_SESSION['payment']['action']== "deposit"){
$curr = $user->details($_SESSION['uid']);
$newBal = $curr['balance'] + $_SESSION['payment']['amount'];
$user->update($_SESSION['uid'],'balance',$newBal);
}
if($_SESSION['payment']['action']== "purchase"){
$buy = $purchases->add($_SESSION['uid'],$_SESSION['payment']['product_id'],$_SESSION['payment']['id'],'1');
}
$headers = "MIME-Version: 1.0\n";
$headers .= "Content-type: text/html; charset=utf-8\n";
$headers .= "From: 'Success Email' <noreply@".$_SERVER['HTTP_HOST']."> \n";
$subject = "Account Information";
$message = "<h4>Hello, ".$_SESSION['curr_user'] ."</h4><br />";
$message .= "You just made a transaction of ".$setting['currency']. $_SESSION['payment']['amount']."<br />";
$message .= "transaction ID:".$_SESSION['payment']['id']."<br />";
$message .= "© ".$_SERVER['HTTP_HOST'];
mail($_SESSION['curr_user'],$subject,$message,$headers);
unset($_SESSION['payment']);header('location:../../user/'.$redir.'?msg=Transaction Successfull&type=alert-success');
exit; break;
case 'Pending':
unset($_SESSION['payment']);header('location:../../user/'.$redir.'?msg=Transaction Failed&type=alert-error');
exit; break;
unset($_SESSION['payment']);header('location:../../user/'.$redir.'?msg=Transaction Failed&type=alert-error');
exit; break;
default:
unset($_SESSION['payment']);header('location:../../user/'.$redir.'?msg=Transaction Failed&type=alert-error');
}
case 'cancel':
unset($_SESSION['payment']);header('location:../../user/'.$redir.'?msg=Transaction Failed&type=alert-error');
break;
}
?>
Above is the PayPal Class
<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
require_once('../system/config-user.php');
require_once('../system/gateways.php');
$gateway = $_SESSION['payment']['gateway'] ;
$amount = $_SESSION['payment']['amount'] ;
$detail = $_SESSION['payment']['detail'] ;
$crf = $_SESSION['payment']['crf'] ;
$currency = $setting['currency'];
$crf_gen = md5("test" . date('YMD'));
if($crf_gen != $crf || !$gateway || !$amount){
?>
<head><title>Error</title></head>
<center><h2>Unknown Transaction.</h2></center>
<?php
exit;
}
switch($_GET['action']){
case 'process':
if($_SESSION['payment']['action'] == "deposit"){
$transaction_id = $transaction->add($_SESSION['uid'],$amount,'0','2','2');
}elseif($_SESSION['payment']['action'] == "purchase"){
$transaction_id = $transaction->add($_SESSION['uid'],$amount,$_SESSION['payment']['product_id'],'1','2');
}
if(!$transaction_id){
?>
<head><title>Error</title></head>
<center><h2>Unable to process transaction.</h2></center>
<?php
exit;
}
$_SESSION['payment']['id'] = $transaction_id;
$detail .= " (" .$transaction_id .")";
$_SESSION['payment']['hash']= md5($crf.$transaction_id.$amount);
header("location:../system/gateways/$gateway?transaction_id=$transaction_id&detail=$detail&amount=$amount¤cy=$currency&crf=$crf");
break;
case 'callback':
if(!$_SESSION['payment']['id']){
?>
<head><title>Error</title></head>
<center><h2>Unknown Transaction.</h2></center>
<?php
}
$transaction_id = $_SESSION['payment']['id'] ;
$status = $_POST['auth'];
$txn = $_POST['txn'];
$amt = $_POST['amt'];
$gcrf = $_POST['crf'];
$hsh = $_SESSION['payment']['hash'];
$hash = md5($gcrf.$txn_id.$amt);
$crf = md5($gateway,$transaction_id,$amount,$crf);
if($transaction_id != $txn || $amount != $amt || $crf != $gcrf || $hash != $hsh){
?>
<head><title>Error</title></head>
<center><h2>Transaction rejected.</h2></center>
<?php
}
$action = $transaction->update($transaction_id,'callback',$status);
unset($_SESSION['payment']);
$type = ($status='1'?'alert-success':'alert-error');
$msg = ($status='1'?'Transaction completed':'Transaction failed');
?>
<html>
<head><title>Processing payment...</title></head>
<body onLoad="document.forms['payment_form'].submit();" >
<center><h2>Please wait, your order is being processed and you will be redirected back to our website.</h2></center>
<center></center>
<form method="post" name="payment_form" action="statement.php">
<input type="hidden" name="msg" value="<?php echo $msg;?>">
<input type="hidden" name="type" value="<?php echo $type; ?>">
</form></body></html>
<?php
break;
default:
?>
<head><title>Error</title></head>
<center><h2>Unknown Transaction.</h2></center>
<?php
}
?>
Above is the processing code
Thanks all help really appreciated
