如何接收Facebook图形API返回的数据？

Question

I am new to stackoverflow and programming. I am just learing php and decided to work with facebook place search api for just practice purpose.

I have written the below code in php:

$FacebookGraphURL = 'https://graph.facebook.com/search?q='.$keyword.'&type=place' . htmlentities('&center=') .$center.'&distance='.$distance.'&access_token='.ACCESS_TOKEN;

$FacebookGraphJSON = @file_get_contents($FacebookGraphURL);
$dataArray = json_decode($FacebookGraphJSON);

But it don't return anything. I think this is not appropriate way to get from graph api.I have searched quite a lot but could not find one which I can understand as I am a novice.

Can any one help me.

Answer 1

1) htmlentities('&center=') .$center should be &center=' . htmlentities($center) . &center=' . htmlentities($center) .

2) don't use the @ before file_get_contents this will suppress error (warning in this case) when your file request fails.

try the code below:

error_reporting(E_ALL);
ini_set('display_errors', 'On');
define('ACCESS_TOKEN','**********************************************');
$keyword = 'coffee';
$center= urlencode('37.76,-122.427');
$distance=1000;
$FacebookGraphURL = 'https://graph.facebook.com/search?q='.$keyword.'&type=place&center='.$center.'&distance='.$distance.'&access_token='.ACCESS_TOKEN;
$FacebookGraphJSON = file_get_contents($FacebookGraphURL);
$dataArray = json_decode($FacebookGraphJSON);
var_dump($dataArray);
exit;