PHP function run on localhost but not on my server

Question

In a .php page I have the function below. In localhost the JSON response is different than NULL, but when I put the page in on the server (FTP) the JSON response is NULL.

THE CODE

// Check for required parameters
if (isset($_POST["placetype"]) && isset($_POST["placeName"])) {
  $pt = $_POST["placetype"];
  $pn = $_POST["placeName"];
  $dir = 'Pictures/Attractions/'.$pt.'/'.$pn.'/';
  $files = scandir($dir);
  foreach($files as $ind_file) {
    $result[] = array(
      "data" => $ind_file
    );
  sendResponse(200, json_encode($result));
  return true;
}//ifisset
sendResponse(400, 'Invalid request');
return false;

Note: the same folders are on both local and on the server.

Thanks.

What exactly does this sendReponse function do? It's not a standard PHP function. As well, you'll get NULL as json if the path you're generating doesn't exist - you never set $result to be anything UNLESS at least one file is found. — Marc B
– Marc B, Commented Jul 14, 2012 at 15:41
Could be a file permission problem. Can the webserver user read the pictures folder? — pixelistik
– pixelistik, Commented Jul 14, 2012 at 15:44
And please sanitize your input. What happens if $_POST["placeName"] = '../../../folder_with_all_my_passwords'? — pixelistik
– pixelistik, Commented Jul 14, 2012 at 15:46

Maxim · Accepted Answer · 2012-07-14 15:57:16Z

1

See this

$files = scandir($dir);

If you haven't files in $dir, you variable $result will not create and will hold nothing, json will return null. On remote server you haven't files and json_encode return null

answered Jul 14, 2012 at 15:57

Maxim

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1 Comment

Bobj-C Over a year ago

Yup the $files is empty i should write $ dir ='./Pictures/Attractions/'.$pt.'/'.$pn.'/';

Scotty C. · Accepted Answer · 2012-07-14 15:49:55Z

1

I'm guessing the PHP install on your server is not up to date. json_encode() only works with PHP 5 >= 5.2.0.

answered Jul 14, 2012 at 15:49

Scotty C.

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1 Comment

Bobj-C Over a year ago

Others .php files are contains bunch of json_encode and they are working properly.

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