I am using Youtube data api v3 to retrieve data for search query using the below url
https://www.googleapis.com/youtube/v3/search?part=snippet&q=text&key=apikey&maxResults=25.
I am getting json response, while i am using json decode to parse the json data, i am getting empty result, can any one tell me how to retrieve the data
I am using below php code to parse
$videourl="https://www.googleapis.com/youtube/v3/search?part=snippet&q=hello&key=apikey&maxResults=25";
$json = file_get_contents($videourl);
$data = json_decode($json,true);
print_r($data);
obtaining the json response from the below url:
https://www.googleapis.com/youtube/v3/search?part=snippet&q=hello&key=apikey&maxResults=25
if (extension_loaded('curl')) {
# create a new cURL resource
$ch = curl_init();
# set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "http://googleapis.com/.....");
curl_setopt($ch, CURLOPT_HEADER, 0);
# Setting cURL's option to return the webpage data
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
# grab URL and pass it to the browser
if($json = curl_exec($ch)) {
if(!($data = #json_decode($json)) instanceof stdClass) {
trigger_error('Unable to decode json. '. print_r(error_get_last(), true));
}
}
else trigger_error('CUrl Error:'.curl_error($ch));
# close cURL resource, and free up system resources
curl_close($ch);
}
else trigger_error('CUrl unsupported', E_USER_WARNING);
You should test the return value of file_get_contents. Be careful that this function will return FALSE in case of error (and not NULL). So you should test the return value with === FALSE in order to not be confused by empty values.
In your case, if you are trying to access the exact url that you posted in your question, google is returning a code 400 (bad request), this is why you get a return of FALSE.
Related
I'm creating a website that uses the etsy api to display shop info. I'm trying to access the individual values of the retruned json string. To do this I need to turn the returned string into an object. The only way I can see to do this is json_decode($response_body);, but I can't seem to get this to work. When I use the function it returns undefined/NULL when I try to get it's type. The returned string looks about like this: {"count":3,"results":[{"listing_id":252525252,"state":"active","user_id":1111111,"category_id":1234567,"title":"Title of product","description":"This is a description"}. Is there something I am doing completely wrong? Here is the code i'm using:
$url = "https://api.etsy.com/v2/shops/shopname/listings/active?api_key=".$apikey;
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response_body = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if (intval($status) != 200) throw new Exception("HTTP $status\n$response_body");
$reponse_fixed = json_decode($response_body);
echo $response_fixed;
json_decode returning null can be possible if the data that has been passed as an argument is an invalid JSON or empty.
So make sure the response is in correct JSON format
I'm programming in PHP.
An article I've found useful until now was mainly about how to CURL through one site with a lot of information, but what I really need is how to cURL on multiple sites with not so much information - a few lines, as a matter of fact!
Another part is, the article focus is mainly at storing it at the FTP server in a txt file, but I have loaded around 900 addresses into mysql, and want to load them from there, and enrich the table with the information stored in the links - Which I will provided beneath!
We have some open public libraries with addresses and information about these and an API.
Link to the main site:
The function I would like to use: http://dawa.aws.dk/adresser/autocomplete?q=
SQL Structure:
Data example: http://i.imgur.com/jP1J26U.jpg
fx this addresse: Dornen 2 6715 Esbjerg N (called AdrName in databasen).
http://dawa.aws.dk/adresser/autocomplete?q=Dornen%202%206715%20Esbjerg%20N
This will give me the following output (which I want to store in the AdrID in the database):
[
{
"tekst": "Dornen 2, Tarp, 6715 Esbjerg N",
"adresse": {
"id": "0a3f50b8-d085-32b8-e044-0003ba298018",
"href": "http://dawa.aws.dk/adresser/0a3f50b8-d085-32b8-e044-0003ba298018",
"vejnavn": "Dornen",
"husnr": "2",
"etage": null,
"dør": null,
"supplerendebynavn": "Tarp",
"postnr": "6715",
"postnrnavn": "Esbjerg N"
}
}
]
How to store it all in a blob, as seen in the SQL structure?
If you want to make a cURL request in php use this method
function curl_download($Url){
// is cURL installed yet?
if (!function_exists('curl_init')){
die('Sorry cURL is not installed!');
}
// OK cool - then let's create a new cURL resource handle
$ch = curl_init();
// Now set some options (most are optional)
// Set URL to download
curl_setopt($ch, CURLOPT_URL, $Url);
// Set a referer
curl_setopt($ch, CURLOPT_REFERER, "http://www.example.org/yay.htm");
// User agent
curl_setopt($ch, CURLOPT_USERAGENT, "MozillaXYZ/1.0");
// Include header in result? (0 = yes, 1 = no)
curl_setopt($ch, CURLOPT_HEADER, 0);
// Should cURL return or print out the data? (true = return, false = print)
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Timeout in seconds
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
// Download the given URL, and return output
$output = curl_exec($ch);
// Close the cURL resource, and free system resources
curl_close($ch);
return $output;
}
And then you call it using
print curl_download('http://dawa.aws.dk/adresser/autocomplete?q=Melvej');
Or you can directly convert it jSON object
$jsonString=curl_download('http://dawa.aws.dk/adresser/autocomplete?q=Melvej');
var_dump(json_decode($jsonString));
The data you download is json, so you can store that in a varchar column rather than blog.
Also the site with the api does not seem bothered about http referrer, user agent etc so you can use file_get_contents in place of curl.
So simply get all the results from your db, iterate over them, making a call to the api, and update the appropriate row with the correct data:
//get all the rows from your database
$addresses = DB::exec('SELECT * FROM addresses'); //i dont know how you actually access your db, this is just an example
foreach($addresses as $address){
$searchTerm = $address['AdrName'];
$addressId = $address['Vid'];
//download the json
$apidata = file_get_contents('http://dawa.aws.dk/adresser/autocomplete?q=' . urlencode($searchTerm));
//save back to db
DB::exec('UPDATE addresses SET status=? WHERE id=?', [$apidata, $searchTerm]);
//if you want to access the data, you can use json_decode:
$data = json_decode($apidata);
echo $data[0]->tekst; //outputs Dornen 2, Tarp, 6715 Esbjerg N
}
I'm trying to get json data by calling moodle url:
https://<moodledomain>/login/token.php?username=test1&password=Test1&service=moodle_mobile_app
the response format of moodle system is like this:
{"token":"a2063623aa3244a19101e28644ad3004"}
The result I tried to process with PHP:
if ( isset($_POST['username']) && isset($_POST['password']) ){
// test1 Test1
// request for a 'token' via moodle url
$json_url = "https://<moodledomain>/login/token.php?username=".$_POST['username']."&password=".$_POST['password']."&service=moodle_mobile_app";
$obj = json_decode($json_url);
print $obj->{'token'}; // should print the value of 'token'
} else {
echo "Username or Password was wrong, please try again!";
}
Result is: undefined
Now the question:
How can I process the json response format of moodle system? Any idea would be great.
[UPDATE]:
I have used another approach via curl and changed in php.ini following lines: *extension=php_openssl.dll*, *allow_url_include = On*, but now there is an error: Notice: Trying to get property of non-object. Here is the updated code:
function curl($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
$moodle = "https://<moodledomain>/moodle/login/token.php?username=".$_POST['username']."&password=".$_POST['password']."&service=moodle_mobile_app";
$result = curl($moodle);
echo $result->{"token"}; // print the value of 'token'
Can anyone advise me?
json_decode() expects a string, not a URL. You're trying to decode that url (and json_decode() will NOT do an http request to fetch the url's contents for you).
You have to fetch the json data yourself:
$json = file_get_contents('http://...'); // this WILL do an http request for you
$data = json_decode($json);
echo $data->{'token'};
I've researched everywhere and cannot figure this out.
I am writing a test cUrl request to test my REST service:
// initialize curl handler
$ch = curl_init();
$data = array(
"products" => array ("product1"=>"abc","product2"=>"pass"));
$data = json_encode($data);
$postArgs = 'order=new&data=' . $data;
// set curl options
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLINFO_HEADER_OUT, TRUE);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postArgs);
curl_setopt($ch, CURLOPT_URL, 'http://localhost/store/rest.php');
// execute curl
curl_exec($ch);
This works fine and the request is accepted by my service and $_Post is populated as required, with two variables, order and data. Data has the encoded JSON object. And when I print out $_Post['data'] it shows:
{"products":{"product1":"abc","product2":"pass"}}
Which is exactly what is expected and identical to what was sent in.
When I try to decode this, json_decode() returns nothing!
If I create a new string and manually type that string, json_decode() works fine!
I've tried:
strip_tags() to remove any tags that might have been added in the http post
utf8_encode() to encode the string to the required utf 8
addslashes() to add slashes before the quotes
Nothing works.
Any ideas why json_decode() is not working after a string is received from an http post message?
Below is the relevant part of my processing of the request for reference:
public static function processRequest($requestArrays) {
// get our verb
$request_method = strtolower($requestArrays->server['REQUEST_METHOD']);
$return_obj = new RestRequest();
// we'll store our data here
$data = array();
switch ($request_method) {
case 'post':
$data = $requestArrays->post;
break;
}
// store the method
$return_obj->setMethod($request_method);
// set the raw data, so we can access it if needed (there may be
// other pieces to your requests)
$return_obj->setRequestVars($data);
if (isset($data['data'])) {
// translate the JSON to an Object for use however you want
//$decoded = json_decode(addslashes(utf8_encode($data['data'])));
//print_r(addslashes($data['data']));
//print_r($decoded);
$return_obj->setData(json_decode($data['data']));
}
return $return_obj;
}
Turns out that when JSON is sent by cURL inside the post parameters & quot; replaces the "as part of the message encoding. I'm not sure why the preg_replace() function I tried didn't work, but using html_entity_decode() removed the " and made the JSON decode-able.
old:
$return_obj->setData(json_decode($data['data']));
new:
$data = json_decode( urldecode( $data['data'] ), true );
$return_obj->setData($data);
try it im curious if it works.
API integration description
The API needs a form to be posted to the API URL with some input fields and a customer token. The API processes and then posts response to a callback.php file on my server. I can access the posted vals using $_POST in that file. That's all about the existing method and it works fine.
Requirement
To hide the customer token value from being seen from client side. So I started with sending server side post request.
Problem
I tried with many options but the callback is not happening -
1) CURL method
$ch = curl_init(API_URL);
$encoded = '';
$_postArray['customer_token'] = API_CUSTOMER_TOKEN;
foreach($_postArray as $name => $value)
{
$encoded .= urlencode($name).'='.urlencode($value).'&';
}
// chop off last ampersand
$encoded = substr($encoded, 0, strlen($encoded)-1);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $encoded);
$resp = curl_exec($ch);
curl_close($ch);
echo $resp;
$resp echoes 1 if the line curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); is removed but the callback does not happen. I am setting a session variable in the callback script to verify.Is it needed that the API be synchronous in order to use curl method, so that curl_exec returns the response?
2) without CURL as given in Posting parameters to a url using the POST method without using a form
But the callback is not happening.
I tried with the following code too, but looks like my pecl is not installed properly because the HttpRequest() is not defined.
$req = new HttpRequest($apiUrl, HttpRequest::METH_POST);
$req->addQueryData($params);
try
{
$r->send();
if ($r->getResponseCode() == 200)
{
echo "success";
// success!
}
else
{
echo "failure";
// got to the API, the API returned perhaps a RESTful response code like 404
}
}
catch (HttpException $ex)
{
// couldn't get to the API (probably)
}
Please help me out! I just need to easily send a server side post request and get the response in the callback file.
Try to debug your request using the curl_get_info() function:
$header = curl_getinfo($ch);
print_r($header);
Your request might be OK but it my result in an error 404.
EDIT: If you want to perform a post request, add this to your code:
curl_setopt($ch, CURLOPT_POST, true);
EDIT: Something else I mentioned at your code: You used a '1' at the 'CURLOPT_RETURNTRANSFER' but is should be 'true':
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
At least this is how I usually do it, and you never know if the function will also understand a '1' as 'true';
EDIT: The real problem: I copy-pasted your source and used it on one of my pages getting this error:
Warning: urlencode() expects parameter 1 to be string, array given in C:\xampp\htdocs\phptests\test.php on line 8
The error is in this line:
foreach($_postArray as $name => $value)
$_postArray is an array with one value holding the other values and you need either another foreach or you simple use this:
foreach($_postArray['customer_token'] as $name => $value)
As discussed in the previous question, the callback is an entirely separate thing from your request. The callback also will not have your session variables, because the remote API is acting as the client to the callback script and has its own session.
You should really show some API documentation here. Maybe we're misunderstanding each other but as far as I can see, what you are trying to do (get the callback value in the initial CURL request) is futile, and doesn't become any less futile by asking twice.