file_put_contents doesn't work with json laravel & php -

i tried push item json file when call file_put_contents("file.json",$data) doesn't work , page shutdown.

here's controller code.

public function addjson() {     $titulo = input::get('title');     $name = input::file('image')->getclientoriginalname();      $arr = json_decode(file_get_contents("js/data.json"), true);     array_push($arr['galerias'], array('id' => count($arr['galerias'])+1, 'name' => $name, 'img' => 'galeria/'.$name));     $arr2 = $arr['galerias'];     $arr = json_encode($arr);     echo $arr;     file_put_contents('js/data.json', $arr);     return view('main.prueba')->with('name',$arr2); } 

and here json file.

{  "galerias": [ {   "id": 1,   "name": "fiesta privada",   "img": "galeria/fp.jpg" }, {   "id": 2,   "name": "fiesta privada",   "img": "galeria/fp2.jpg" }, {   "id": 3,   "name": "fiesta privada",   "img": "galeria/fp3.jpg" }, {   "id": 4,   "name": "fiesta privada",   "img": "galeria/fp4.jpg" }, {   "id": 5,   "name": "fiesta privada",   "img": "galeria/fp5.jpg" }, {   "id": 6,   "name": "fiesta privada",   "img": "galeria/fp6.jpg" }, {   "id": 7,   "name": "los kjarkas",   "img": "galeria/los_kjarkas.jpg" }, {   "id": 8,   "name": "palmenia pizarro",   "img": "galeria/palmenia_pizarro.jpg" }, {   "id": 9,   "name": "palmenia pizarro",   "img": "galeria/palmenia_pizarro_2.jpg" }, {   "id": 10,   "name": "palmenia pizarro",   "img": "galeria/palmenia_pizarro_3.jpg" } ] } 

heeeelp me pls :c

it permission problem

is directory /js chmoded 777? php won't allow access directories if don't have enough permission. don't know blank errors though.

try see if has enough permissions, if not, set 777 , try it.