從URL獲取JSON

Question

我正在嘗試獲取JSON字符串，並且它一直保持爲NULL，我不知道爲什麼。有人可以檢查我的代碼是否正確嗎？

$url = "http:/engin.umich.edu/college/about/cal/event-calendar/futurejson"; 
    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_URL, $url); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); 
    $feed = curl_exec($ch); 
    curl_close($ch); 

    $data = json_decode($feed,true); 

Answer 1

$url = "http://engin.umich.edu/college/about/cal/event-calendar/futurejson"; 
// missing/^ 
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); 
// It's returning a redirect to www.engin.umich.edu 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); 
$feed = curl_exec($ch); 
curl_close($ch); 

$data = json_decode($feed,true);