How to properly extract an Array from a cURL JSON? - php

I'm trying to extract a user profile picture from Instagram but I can't manage to successfully echo the needed Array.
$url="https://www.instagram.com/selenagomez/media/";
// Initiate curl
$ch = curl_init();
// Disable SSL verification
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
// Will return the response, if false it print the response
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Set the url
curl_setopt($ch, CURLOPT_URL,$url);
// Execute
$json=curl_exec($ch);
// Closing
curl_close($ch);
$result = json_decode($json, true);
echo $result[0]["profile-picture"];
I'm getting: Notice: Undefined offset: 0 in test.php on line 23
Also tried to exclude the 2nd JSON parameter (true) and it didn't help.

The JSON for above URL is as follows:
Source
So, you need to adjust your grip to this:
$results['items'][0]['user']['profile_picture'];
This will output
https://igcdn-photos-a-a.akamaihd.net/hphotos-ak-xfl1/t51.2885-19/s150x150/12918537_1719366751611008_1708400518_a.jpg
Go back one level in the tree to get user property with all its children
$user = $results['items'][0]['user'];

Related

Open a URL with a PHP within it using cURL

I am trying to fetch data from a URL using cURL...this is something I would be able to do but the URL that I want to fetch data from has a section of php code within it - i.e. the URL is populated using a values generated by an earlier section of code.
I want to access the URL, take the figures out of it and then plug those figures into something else. At the minute I am hitting a bit of a roadblock as the php doesn't populate the URL...any ideas?
The code I am using is:
$url = "https://*START OF API ADDRESS*<?php echo $request_ids; ?>*END OF API ADDRESS*";
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL,$url);
$result=curl_exec($ch);
curl_close($ch);
//var_dump(json_decode($result, true));
$rates = json_decode($result, true);
// Save result
$rates['last_updated'] = time();
file_put_contents($file, json_encode($rates));
}

CRON Job using Curl.

I have a PHP Code, which reloads itself with another GET value. Like: example.com?number=453 and it keeps doing this for days. I was doing this in the browser. But i found cron job is way better.
So, I need to use CURL to reload the page with a new GET value like ?number=550. So this is the code, which i use (found it on stackoverflow)
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;
}
$output = curl_download("http://www.example.com/yourscript.php?number='$requestsDone'");
And at the end of the page, i use this, to call the function
curl_download($Url);
But i am getting this error:
Notice: Undefined variable: Url
in the last line, i.e curl_download($Url);
This is how we call the function right? What's wrong? Also is there any mistake or improvement, I can make in the code?
You not assign values ​​to variables $Url.
Before you can assign values ​​to variables $Url. That like $Url = "http://domaintest.com/?number=550";
curl_download($Url);

How to extract data from a decoded JSON object in php

I wanted to try to get data from a JSON string which is loaded from another page. I currently have used Curl to get the data from the webpage but I can't acces the data in it.
I've already tried:
var_dump(json_decode($result->version, true));
var_dump(json_decode($result[3][0]["date"], true));
But this does't seem to work as it always returns NULL
$url="https://roosters.deltion.nl/api/roster?group=AO2B&start=20160125&end=20160201";
// Initiate curl
$ch = curl_init();
// Disable SSL verification
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
// Will return the response, if false it print the response
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Set the url
curl_setopt($ch, CURLOPT_URL,$url);
// Execute
$result=curl_exec($ch);
// Closing
curl_close($ch);
// Will dump a beauty json :3
var_dump(json_decode($result, true));
First decode the JSON, then get the properties you want. Like this:
$yourObject = json_decode($result);
var_dump($youObject->version);
this is working for me.
<?php
$url = "https://roosters.deltion.nl/api/roster?group=AO2B&start=20160125&end=20160201";
// Initiate curl
$ch = curl_init();
// Disable SSL verification
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
// Will return the response, if false it print the response
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Set the url
curl_setopt($ch, CURLOPT_URL, $url);
// Execute
$result = curl_exec($ch);
// Closing
curl_close($ch);
// Will dump a beauty json :3
$data = json_decode($result);
//echo $data->data[0]['date'];
echo "<pre>";
print_r($data->data[0]->date);
}
?>
if you want to get date of all index then try this in loop.
Firstly if your using GET there is no need to use CURL,
$result = file_get_contents(https://roosters.deltion.nl/api/roster?group=AO2B&start=20160125&end=20160201);
Will work just as well without any of the overhead. I suspect that your CURL isn't returning the page content so using file_get_contents() will fix it.

using json data from Curl response

Hi I'm a little new at CURL, but I'm trying to request some json data and then parse the results. I am having success with retrieving the data, but I can't handle the response. Here's the code
function bitBucketCurl($url)
{
global $bitPassword;
global $bitUsername;
$ch = curl_init();
// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_USERPWD, "$bitUsername:$bitPassword");
curl_setopt($ch, CURLOPT_HEADER, 0);
// grab URL and pass it to the browser
$commitinfo = curl_exec($ch);
// close cURL resource, and free up system resources
curl_close($ch);
return $commitinfo;
}
$json = bitBucketCurl($url);
echo $json; // This seems to work in that, when I load the page, I can see the json data
//turn json data into an array - this is what does not seem to be working
$obj_a = json_decode($json, true);
print_r ($obj_a); //the result is simply a 1 rather than the array I would expect
The basic problem is the json data shows up when I echo $json but when I try to turn that data into an array it doesn't work. When I print the array, I just get a '1'.
I got the required result by adding the following line:
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

PHP return value from decoded object

Can someone please tell me where is the error in this code?, I use a mobile iphone application to call a php script tha will send information to apple. Apple then will return a JSON object containing several values in an associative array.
I want to reach the 'status' value but every time I run the code in the phone, the php script sends me the complete apple's returned string. In the XCode debugger the received string looks like:
[DEBUG]... responseString :
{"receipt":{"item_id":"328348691",
"original_transaction_id":"1000000000081203",
"bvrs":"1.0", "product_id":"julia_01",
"purchase_date":"2009-10-05 23:47:00
Etc/GMT", "quantity":"1",
"bid":"com.latin3g.chicasexy1",
"original_purchase_date":"2009-10-05
23:47:00 Etc/GMT",
"transaction_id":"1000000000081203"},
"status":0}
but the only piece I care in the string is the "status" value.
I've already looked inside documentation but can't find the solution. I'm new in php but this getting too long. Here the script:
<?php
//The script takes arguments from phone's GET call
$receipt = json_encode(array("receipt-data" => $_GET["receipt"]));
//Apple's url
$url = "https://sandbox.itunes.apple.com/verifyReceipt";
//USe cURL to create a post request
//initialize cURL
$ch = curl_init();
// set the target url
curl_setopt($ch, CURLOPT_URL,$url);
// howmany parameter to post
curl_setopt($ch, CURLOPT_POST, 1);
// the receipt as parameter
curl_setopt($ch, CURLOPT_POSTFIELDS,$receipt);
$result = curl_exec ($ch);
//Here the code "breaks" and return the complete string (i've tested that)
//and apparently doesn't get to the json_decode function (i think something's wrong there, so code breaks here)
curl_close ($ch);
$response = json_decode($result);
echo $response->{'status'};
?>
Even if I don't put any echo at the end, the script still returns a complete string (odd to me)
Thank's in advance and apollogies if I insist again from another question
Try setting the RETURNTRANSFER option to 1 so you can capture the output from the requested URL as a string. It seems that the default behaviour of cURL is to output the result directly to the browser:
...
$ch = curl_init();
// set the target url
curl_setopt($ch, CURLOPT_URL,$url);
// howmany parameter to post
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // <---- Add this
// the receipt as parameter
curl_setopt($ch, CURLOPT_POSTFIELDS,$receipt);
...

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