http://developers.facebook.com/docs/reference/api/event
I'm trying to grab some values from a Facebook JSON even object in PHP. Namely, title of event, location, and people attending. Using the Graph API.
<?php
$jsonurl = "https://graph.facebook.com/331218348435?access_token=2227470867|2.rtBZMkVIVgKGZ7Xr4px3Dw__.3600.1280822400-662817093|apY_UHK_2SKQFel3XxpKJ09GEo4.";
$json = file_get_contents($jsonurl,0,null,null);
$json_output = json_decode($json);
How can echo the values from JSON output? I'm assuming it will be returned as an array.
Thank you!
If you're using PHP, you can use the PHP SDK to query the API. This means you can make calls like:
$user = $facebook->api('/someusername', array('fields' => 'id,first name,last_name ...'));
However, with your example, you could do the following:
$url = "https://graph.facebook.com/331218348435?access_token=2227470867|2.rtBZMkVIVgKGZ7Xr4px3Dw__.3600.1280822400-662817093|apY_UHK_2SKQFel3XxpKJ09GEo4.";
$user = json_decode(file_get_contents($jsonurl));
echo $user['first_name'];
As if you use json_decode, it should decode the result into a native PHP array (or in same cases, an object).
Specify the second argument of true to json_encode to convert it to array and then you can print the output like this:
$json_output = json_decode($json, true);
echo '<pre>';
print_r($json_output);
echo '</pre>';
Now you can get specific item like this:
echo $json_output['title'];
Related
I run the following PHP after I submit a form and get the output shown below:
$data = json_encode($_POST);
// output
{"First_Name":"Fred"}
How do I use PHP to just display the value 'Fred'?
I tried echo $data['First_Name']; but this is blank.
You no need to encode your incoming $_POST data.
Just say:
echo $_POST['First_Name'];
If you get a json data, decode it into an array:
$data = '{"First_Name":"Fred"}';
$decoded = json_decode($data, true);
echo $decoded['First_name'];
First of all, don't know why you use json_encode on PHP Array, and try to access it like it's an array - because after json_encode it's a string.
You have to use json_decode($data, true) and then you can access it like $data['First_Name'] or try to access it directly without json_encode() by $_POST['First_Name']
The json_decode() function is used to decode or convert a JSON object to a PHP object.And try to put the object to decode in another variable to avoid errors
<?php
$obj = '{"First_Name":"Fred"}';
$data = json_decode($obj);
echo ($data->First_Name);
?>
I'm trying to get the last price in USD from this coin:
<?php
$json = file_get_contents('https://api.coinmarketcap.com/v2/ticker/2424/');
echo $json;
?>
I tried two different options on the JSON object like [0]['price]
Nothing works.
The response from coinmarketcap is in JSON, so you need to json_decode it.
The second paramter of json_decode lets you decide if its a object or array. For an array, mark this as true
<?php
$json = file_get_contents('https://api.coinmarketcap.com/v2/ticker/2424/');
$objResponse = json_decode($json, true);
echo $objResponse['data']['quotes']['USD']['price'];
I'm trying to get the access_token value from a curl response. The key value which is [0] renders out like so, {"access_token":"430f8a7d4f721a9e51e3558689ff28ec592923d2","expires_in":3600,"token_type":"Bearer","scope":null}.
However, I just need the value nested inside of access_token, which is 430f8a7d4f721a9e51e3558689ff28ec592923d2.
The output is rendered using this:
$cmd="curl -u testuser:123456 http://localhost/oauth2/server/token.php -d 'grant_type=client_credentials'";
exec($cmd,$result);
echo '<pre>'; print_r($result[0]); echo '</pre>';
How might go about doing this?
Btw, none of this is sensitive data. I'm just experimenting with oauth2.
Use the json_decode function on the results.
<?php
$json = '{"access_token":"430f8a7d4f721a9e51e3558689ff28ec592923d2","expires_in":3600,"token_type":"Bearer","scope":null}';
// Decode the JSON into an object
$decodedJson = json_decode($json);
$accessToken = $decodedJson->access_token;
var_dump($decodedJson,$accessToken);
// Decode the JSON into an array (note the true on the decode)
$decodedJson = json_decode($json,true);
$accessToken = $decodedJson['access_token'];
var_dump($decodedJson,$accessToken);
Encoding the json result, finds the subset.
$json = $result[0];
$json = json_decode($json, true);
echo $json['access_token'];
I'm trying to decode the following JSON using php json_decode function.
[{"total_count":17}]
I think the square brackets in output is preventing it. How do I get around that? I can't control the output because it is coming from Facebook FQL query:
https://api.facebook.com/method/fql.query?format=json&query=SELECT%20total_count%20FROM%20link_stat%20WHERE%20url=%22http://www.apple.com%22
PHP's json_decode returns an instance of stdClass by default.
For you, it's probably easier to deal with array. You can force PHP to return arrays, as a second parameter to json_decode:
$var = json_decode('[{"total_count":17}]', true);
After that, you can access the variable as $result[0]['total_count']
See this JS fiddle for an example of how to read it:
http://jsfiddle.net/8V4qP/1
It's basically the same code for PHP, except you need to pass true as your second argument to json_decode to tell php you want to use it as associative arrays instead of actual objects:
<?php
$result = json_decode('[{"total_count":17}]', true);
print $result[0]['total_count'];
?>
if you don't pass true, you would have to access it like this: $result[0]->total_count because it is an array containing an object, not an array containing an array.
$json = "[{\"total_count\":17}]";
$arr = Jason_decode($json);
foreach ($arr as $obj) {
echo $obj->total_count . "<br>";
}
Or use json_decode($json, true) if you want associative arrays instead of objects.
I am trying to read certain values from a json string in php, I am able to do a simple json string with only one value such as
$json = '{"value":"somevalue"}';
Using this:
<?php
$json = '{"value":"somevalue"}';
$obj = json_decode(json_encode($json));
print $obj->{'value'};
?>
But when i try an get a value from the following json string it throws an error...
$json = '{"field": "title","rule": {"required": "true","minlength": "4","maxlength": "150" }}';
I validated the json on JSONlint but not sure how to access the values within this with php.
Thanks
You can try this:
$json = '{"field": "title","rule": {"required": "true","minlength": "4","maxlength": "150" }}';
//since $json is a valid json format you needn't encode and decode it again
$obj = json_decode($json);
print_r($obj->filed);
print_r($obj->rule);
You can pass true as a second parameter to json_decode() to get the results as an array
$my_arr = json_decode($json, true);
var_dump($my_arr);
Should help you. You can then step through the array as you would normally.
use var_dump to print out the object with all it's members and hierarchy. you should then be able to find the value you are looking for