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Stuck in Paypal Integration

I am trying to integrate Paypal and I do not understand how it is right. When the site is redirected to Paypal, it displays a web page (the image I added with this message). Please someone help me in this mess because I am doing this for the first. Please someone tell me where I can be wrong. alt text http://img341.imageshack.us/img341/6920/captureqt.jpg

I used this class to integrate Paypal into my website. But I don’t know why I don’t get the desired thing.

/ ************************************************* ******************************** * IPN integration class Paypal IPN

  • Posted by: Micah Carrick
  • Email: email@micahcarrick.com
  • Website: http://www.micahcarrick.com *
  • File: paypal.class.php
  • Version: 1.3.0
  • Copyright: (c) 2005 - Mika Carrick.
  • You are free to use, distribute and modify this software.
  • in accordance with the terms of the public GNU license. Cm.
  • license.txt file included.

  • HISTORY VERION:

  • v1.3.0 [10.10.2005] - Fixed so that single quotes are processed
  • the right way, not just removing them. it
  • was necessary because the user could still put
  • quotes.
    • v1.2.1 [05/06/2005] - The typo from the previous correction is fixed :) *
  • v1.2.0 [05.31.2005] - added additional ability to delete all quotation marks
  • from PayPal messages. IPN will return.
  • incorrect sometimes when quotation marks are used in certian
  • fields. *
  • v1.1.0 [05.15.2005] - Changed the form output in submit_paypal_post
  • , javascript,
  • . *

  • v1.0.0 [04.16.2005] - *

  • : *

  • . . www.micahcarrick.com .
  • . *
  • paypal
  • (IPN) PayPal.
  • paypal "plug" n "play".
  • ( ), paypal
  • , / paypal,
  • , .
    *
  • paypal,
  • .
    • , php-toolkit PayPal.
  • ,
  • - - . PHP-
  • http://sourceforge.net/projects/paypal.
    • PayPal, POST : *
  • $p = new paypal_class;
  • $p- > add_field ('business', 'somebody@domain.com');
  • $p- > add_field ('first_name', $_POST ['first_name']);
  • ... ( )
  • $p- > submit_paypal_post(); *
  • IPN, IPN: *
  • $p = new paypal_class;
  • if ($ p- > validate_ipn()) {
  • ... ( IPN. ipn_data())
  • } * *
  • paypal, - : *
  • http://www.paypal.com/en_US/pdf/integration_guide.pdf.
  • , ,
  • paypal ( add_field() ),
  • IPN ( ipn_data()
  • ). . *
    1. "" .
test account (s) that allows you to test your site from both a prospective seller and a buyer. Instructions for this are available at https://developer.paypal.com/ , as well as an excellent forum where you can ask all your questions about integration into PayPal. Make sure that you follow all the guidelines for setting up a sandbox test environment, including adding fake bank accounts and credit cards.

* /

class paypal_class {

var $ last_error; // contains the last error detected

var $ ipn_log; // bool: write IPN results to a text file?

var $ ipn_log_file; // IPN log file name var $ ipn_response; // contains the IPN response from paypal
 var $ ipn_data = array (); // the array contains POST values ​​for IPN

var $ fields = array (); // the array contains fields to send to paypal

paypal_class () function {

  // initialization constructor.  Called when class is created.

  $this->paypal_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr';

  $this->last_error = '';

  $this->ipn_log_file = 'ipn_results.log';
  $this->ipn_log = true; 
  $this->ipn_response = '';

  // populate $fields array with a few default values.  See the paypal
  // documentation for a list of fields and their data types. These defaul
  // values can be overwritten by the calling script.

  $this->add_field('rm','2');           // Return method = POST
  $this->add_field('cmd','_xclick');

}

function add_field ($ field, $value) {

  // adds a key=>value pair to the fields array, which is what will be 
  // sent to paypal as POST variables.  If the value is already in the 
  // array, it will be overwritten.

  $this->fields["$field"] = $value;

}

function submit_paypal_post() {

  // this function actually generates an entire HTML page consisting of
  // a form with hidden elements which is submitted to paypal via the 
  // BODY element onLoad attribute.  We do this so that you can validate
  // any POST vars from you custom form before submitting to paypal.  So 
  // basically, you'll have your own form which is submitted to your script
  // to validate the data, which in turn calls this function to create
  // another hidden form and submit to paypal.

  // The user will briefly see a message on the screen that reads:
  // "Please wait, your order is being processed..." and then immediately
  // is redirected to paypal.

  echo "<html>\n";
  echo "<head><title>Processing Payment...</title></head>\n";
  echo "<body onLoad=\"document.forms['paypal_form'].submit();\">\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 "<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 setStatus()  {

   $db = new Connection();
   $con = $db->getConnection();
   $query="insert into paypal_Result(`mc_gross`,`protection_eligibility`) values ('1','2')";
   $rs=mysql_query($query,$con);
   if($rs != "")
   {
      return true; 
   }
   else
   {
       return false;
   }

} */

//----------------------------------------

function validate_ipn() {

  // parse the paypal URL
  $url_parsed=parse_url($this->paypal_url);        

  // generate the post string from the _POST vars aswell as load the
  // _POST vars into an arry so we can play with them from the calling
  // script.
  $post_string = '';    
  foreach ($_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;

  }

}

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

}

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)."&nbsp;</td></tr>";
  }

  echo "</table><br>";

} }

+3
1

, , , - , , paypal, .

+2

Source: https://habr.com/ru/post/1731690/

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