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PHP整合PayPal支付

2024-05-04 22:36:39
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简单整理一下PHP项目整合PayPal支付功能。

一、表单的构建:

<form method="post" name="form" action="https://www.paypal.com/cgi-bin/webscr"><input type="hidden" name="rm" value="2"/><input type="hidden" name="cmd" value="_xclick"/><input type="hidden" name="business" value="商家账号"/><input type="hidden" name="return" value="返回网址"/><input type="hidden" name="cancel_return" value="取消返回网址"/><input type="hidden" name="notify_url" value="用于接收PayPal发送的即时付款通知的URL,必须是有效的URL"/><input type="hidden" name="item_name" value="物品名称"/><input type="hidden" name="item_number" value="可用于跟踪购买或捐赠的传递变量,在付款完成时传回给您"/><input type="hidden" name="amount" value="物品的价格(购物车中所有物品的总价格"/><input type="hidden" name="currency_code" value="币种"/></form>

二、IPN验证部分

<?phpclass paypal {  var $ipn_data = array();     // array contains the POST values for IPN  var $fields = array();      // 提交给Paypal的表单参数,例:item_name=iPhone 6,quantity=1,amount=499,currency_code=USD等所有表单信息,                     // 在调用验证IPN之前事先需要初始化好  var $paypal_url = 'https://www.paypal.com/cgi-bin/webscr';//sandbox:https://www.sandbox.paypal.com/cgi-bin/webscr    function validate_ipn() {//验证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 ".$url_par[path]." HTTP/1.1/r/n");        fputs($fp, "Host: ".$url_par[host]."/r/n");        fputs($fp, "Content-type: application/x-www-form-urlencoded/r/n");        fputs($fp, "Content-length: ".strlen($post_str)."/r/n");        fputs($fp, "Connection: close/r/n/r/n");        fputs($fp, $post_str . "/r/n/r/n");        // loop through the response from the server and append to variable        while(!feof($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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