将file_get_contents用于循环中的不同URL似乎会破坏其余的代码

Question

I am currently trying to fetch some facebook data, which I then want to access in Javascript. Specifically, I am trying to access some characteristics of the user's friends. So I am getting the user's friend list using file_get_contents to his graph API URL. This provides me with an array of friend ids.

As I need a characteristic from each friend, I am doing:

foreach($dataarray as $friend) {
$friendurl = "https://graph.facebook.com/".$friend->id."?access_token=".$token."";
$fdata = json_decode(file_get_contents($friendurl));
if($fdata->gender == "male") {
 array_push($fulldata, $fdata->name);
    }
}

Having this code piece seems to break the javascript code, as none of my alert instructions are ran.

Also, inserting a break after the if, so that only one file_get_contents is done, seems to make the code runnable (but I obviously need to go through all of the friends).

How can I solve this?

I would use jQuery or xmlHttpRequest to do the HTTP GET, but somehow I always seem to get back a status code of 0, with an empty response.

Edit: Here is the JS code:

<script type="text/javascript">
        function initialize() {

                alert('Test1');
                <?php

                $fulldata = array();

                $data = $result->data;

                foreach($data as $friend) {
                    $friendurl = "https://graph.facebook.com/".$friend->id."?access_token=".$token."";
                    //echo("alert(\"".$friendurl."\");");
                    $fdata = json_decode(file_get_contents($friendurl));
                    if($fdata->hometown->name) {
                        array_push($fulldata, $fdata->hometown->name);
                    }
                }
                echo ("alert(\"".count($fulldata)."\")");
                ?>

                }
         </script>

I should've also added that this is being done on a page embedded into facebook using the canvas feature.

Answer 1

Try...

function curl($url){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    return curl_exec($ch);
    curl_close ($ch);
}

foreach($dataarray as $friend){
    $friendurl = "https://graph.facebook.com/".$friend->id."?access_token=".$token."";
    $fdata = json_decode(curl($friendurl));
    if($fdata->gender == "male"){
            array_push($fulldata, $fdata->name);
        }
}

Maybe FGC is disabled but you don't get any notifications/warnings.

Code from comment:

error_reporting(E_ALL); ini_set("display_errors", 1);