Briefly organize the PHP project to integrate PayPal payment function.
1. Form construction:
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2. IPN verification part
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<🎜>class paypal {<🎜> <🎜> var $ipn_data = array(); // array contains the POST values for IPN<🎜> <🎜> var $fields = array(); // Form parameters submitted to Paypal, for example: item_name=iPhone 6, quantity=1, amount=499, currency_code=USD and all form information, <🎜> <🎜> //It needs to be initialized before calling the verification IPN<🎜> <🎜> var $paypal_url = 'https://www.paypal.com/cgi-bin/webscr';//sandbox: https://www.sandbox.paypal.com/cgi-bin/webscr<🎜> <🎜> <🎜> <🎜> Function validate_ipn() {//Verify IPN<🎜> <🎜> // parse the paypal URL<🎜> <🎜> $url_par=parse_url($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. $post_str = ''; foreach ($_POST as $field=>$value) { $this->ipn_data["$field"] = $value; $post_str .= $field.'='.urlencode(stripslashes($value)).'&'; } $post_str.="cmd=_notify-validate"; // append ipn command // open the connection to paypal $fp = fsockopen($url_par[host],"80",$errnum,$errstr,30); if(!$fp) { // could not open the connection. return false; } else { // Post the data back to paypal fputs($fp, "POST ".$url_par[path]." HTTP/1.1rn"); fputs($fp, "Host: ".$url_par[host]."rn"); fputs($fp, "Content-type: application/x-www-form-urlencodedrn"); fputs($fp, "Content-length: ".strlen($post_str)."rn"); fputs($fp, "Connection: closernrn"); fputs($fp, $post_str . "rnrn"); // loop through the response from the server and append to variable while(!feof($fp)) { $this->validate_ipn_response .= fgets($fp, 1024); } fclose($fp); // close connection } if (eregi("VERIFIED",$this->validate_ipn_response)) { return true; } else { return false; } } } ?> |
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