PHP Curl and JSON confusion - php

Question

I'm trying to understand how getting an access_token works with CURL.
$url = "https://api.com/oauth/access_token";
$access_token_parameters = array(
'client_id' => '',
'client_secret' => '',
'grant_type' => '',
'redirect_uri' => '',
'code' => $_GET['code']
);
$curl = curl_init($url);
curl_setopt($curl,CURLOPT_POST,true);
curl_setopt($curl,CURLOPT_POSTFIELDS,$access_token_parameters);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($curl);
curl_close($curl);
I'm supposed to get a JSON string with this right?
I tried a various of things to output the string
$test = json_decode($result);
print_r($test);
$arr = json_encode($result,true);
foreach($arr as $val){
echo $val['access_token'];
}
Am I doing this wrong?
I believe the correct JSON output should be something like this :
{
"access_token": "fb2e77d.47a0479900504cb3ab4a1f626d174d2d",
"user": {
"id": "1574083",
"username": "snoopdogg",
"full_name": "Snoop Dogg",
"profile_picture": "http://distillery.s3.amazonaws.com/profiles/profile_1574083_75sq_1295469061.jpg"
}
}
But this is not working? I'm trying to get the access_token from the server.
Any help would be appreciated! Thank you

Answer 1

Try use below function to get content
$response = get_web_page($url);
$resArr = array();
$resArr = json_decode($response);
//echo"<pre>"; print_r($resArr); echo"</pre>";
function get_web_page($url) {
$options = array (CURLOPT_RETURNTRANSFER => true, // return web page
CURLOPT_HEADER => false, // don't return headers
CURLOPT_FOLLOWLOCATION => true, // follow redirects
CURLOPT_ENCODING => "", // handle compressed
CURLOPT_USERAGENT => "test", // who am i
CURLOPT_AUTOREFERER => true, // set referer on redirect
CURLOPT_CONNECTTIMEOUT => 120, // timeout on connect
CURLOPT_TIMEOUT => 120, // timeout on response
CURLOPT_MAXREDIRS => 10 ); // stop after 10 redirects
$ch = curl_init ( $url );
curl_setopt_array ( $ch, $options );
$content = curl_exec ( $ch );
$err = curl_errno ( $ch );
$errmsg = curl_error ( $ch );
$header = curl_getinfo ( $ch );
$httpCode = curl_getinfo ( $ch, CURLINFO_HTTP_CODE );
curl_close ( $ch );
$header ['errno'] = $err;
$header ['errmsg'] = $errmsg;
$header ['content'] = $content;
return $header ['content'];
}