Pic url grabber

<?php

//Salva in un file tutti gli url appartenenti ad un gruppo.
//Script scritto in fretta e furia, non ottimizzato, alla cazzo. Funziona per miracolo. Insomma: nessuna garanzia.
//Una sola cosa: se lo usate per creare "opere pubbliche", almeno citatemi.
//Enrico Ronconi <enrico.ronconi.p@gmail.com> - 23 Nov 2016

$context = stream_context_create(array('http' => array('header'=>'Connection: close\r\n')));

function add_ids($ids_array,$data){
    foreach ($data as $user) {
        array_push($ids_array, [$user["name"],$user["id"]]);
    }
    return $ids_array;
}
$at="access token here";
$resp = file_get_contents("https://graph.facebook.com/v2.8/831654706902078/members?limit=750&access_token=$at",false,$context);

$resp = json_decode($resp,true);
$ids = add_ids(array(),$resp["data"]);
$limit = false;
while(array_key_exists("next",$resp["paging"])){
    $resp = file_get_contents($resp["paging"]["next"],false,$context);
    $resp = json_decode($resp,true);
    $ids = add_ids($ids,$resp["data"]);
    echo("Raccolti: ".(string)count($ids)."\n");
    //var_dump($resp["paging"]);
    usleep(1000*250);
    if($limit){
        if(count($ids)>=$limit) break;
    }
}

$only_id = array();

foreach($ids as $id){
    array_push($only_id,$id[1]);
    file_put_contents("ids.txt",$id[1]."\n",FILE_APPEND);
    file_put_contents("idsn.txt",$id[0]." -> ".$id[1]."\n",FILE_APPEND);
}

$passo = 50;
$pos = 0;
while($pos<=count($ids)){
    echo($pos."/".count($ids)."\n");
    $request = implode(",",array_slice($only_id,$pos,$passo));
    //echo("https://graph.facebook.com/v2.8/picture?redirect=0&ids=$request&access_token=$at\n");
    $resp = file_get_contents("https://graph.facebook.com/v2.8/picture?redirect=0&ids=$request&access_token=$at",false,$context);
    echo('-');
    $resp = json_decode($resp,true);
    foreach(array_slice($only_id,$pos,$passo) as $x){
        echo('.');
        file_put_contents("urls.txt",$resp[$x]["data"]["url"]."\n",FILE_APPEND);
        $tmp = explode("/",$resp[$x]["data"]["url"]);
        file_put_contents("urlsid.txt",$tmp[substr_count($resp[$x]["data"]["url"],"/")]." ".$x.".jpg\n",FILE_APPEND);
        //file_put_contents("pics/$x.jpg",file_get_contents($resp[$x]["data"]["url"],false,$context));
    }
    echo('\n');
    $pos += $passo;
}

?>