我正在使用名为 paypal_class 的 codeigniter 库。一切都很好，但在验证 ipn 功能时我收到此错误。Use of undefined constant host - assumed 'host'这一定是邮件没有发送给用户的原因。什么都没有返回。
我是贝宝的新手。所以我希望有一个详细的解决方案。谢谢你。请询问您可能需要的任何其他信息。
错误在这一行：
$fp = fsockopen($url_parsed[host], "80", $err_num, $err_str, 30);
在哪里
$url_parsed = parse_url($this->paypal_url);
这是ipn函数：
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 (preg_match("/VERIFIED/i", $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;
}
}