Question

I have a webpage that exposes some public interfaces that are accessed like a simple AJAX call from other pages. Example:

http://domain1.com/interface/function.php:

$json['result'] = ... // fill with data
$json['ok'] = true;
echo json_encode($json);

http://domain2.com/application.php:

$call = 'http://domain1.com/interface/function.php';
$curl = curl_init($call);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$call_data = curl_exec($curl);
$error = curl_error($curl);
curl_close($curl);
print_r($error);
print_r($call_data);

The problem is $call_data is empty. I already try to use *file_get_contents()* and other curl parameters without success. Also, if I change first line in application.php by:

$call = 'http://www.google.com/';

$call_data gets the right file content (Google home page content, of course). More, *curl_error()* doesn’t return any error. What’s happening? Why?

Answer 1

I had the same thing last weekend.
If you have some htaccess file or similar thing that unifies the url of the service proveider and adds / or makes some kind of redirection this might cause you the problem – both curl_exec($curl); and curl_error($curl); will be empty strings.