Modificar objeto pasando por referencia: https://es.stackoverflow.com/q/530322/29967, Php

Modificar objeto pasando por referencia: https://es.stackoverflow.com/...

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<?php

/* 
    Modificar objeto pasando por referencia: 
    https://es.stackoverflow.com/q/530322/29967
*/

$data='[
  {
    "resultados":[
      {
        "seller_id":"102",
        "shop_url":"",
        "shop_title":"",
        "logo_pic":"Tienda.png",
        "company_locality":"San Juena",
        "store_id":"1",
        "allowed_categories":""
      },
      {
        "seller_id":"102",
        "shop_url":"",
        "shop_title":null,
        "logo_pic":"luz.jpg",
        "company_locality":null,
        "store_id":"0",
        "allowed_categories":""
      },
      {
        "seller_id":"99",
        "shop_url":"Asss",
        "shop_title":"saew",
        "logo_pic":"1817893888095_n.jpg",
        "company_locality":"Lomas altas",
        "store_id":"1",
        "allowed_categories":""
      }
    ]
  }
]';

#URL que se usará para la sustitución
$url="https://es.stackoverflow.com/";

#Convertimos los datos a un objeto, para poder iterar
$json=json_decode($data);
#Test del objeto original
var_dump($json);
#Nótese la &, indica que cada $item
#será pasado por referencia
#y por tanto podrá modificarse
foreach ($json[0]->resultados as &$item){
    $item->logo_pic=sprintf("%s%s",$url,$item->logo_pic);
}
#Test del objeto modificado
var_dump($json);

[ + ] Show input
Absolute running time: 0.22 sec, cpu time: 0.08 sec, memory peak: 25 Mb, absolute service time: 0,38 sec

array(1) { [0]=> object(stdClass)#4 (1) { ["resultados"]=> array(3) { [0]=> object(stdClass)#1 (7) { ["seller_id"]=> string(3) "102" ["shop_url"]=> string(0) "" ["shop_title"]=> string(0) "" ["logo_pic"]=> string(10) "Tienda.png" ["company_locality"]=> string(9) "San Juena" ["store_id"]=> string(1) "1" ["allowed_categories"]=> string(0) "" } [1]=> object(stdClass)#2 (7) { ["seller_id"]=> string(3) "102" ["shop_url"]=> string(0) "" ["shop_title"]=> NULL ["logo_pic"]=> string(7) "luz.jpg" ["company_locality"]=> NULL ["store_id"]=> string(1) "0" ["allowed_categories"]=> string(0) "" } [2]=> object(stdClass)#3 (7) { ["seller_id"]=> string(2) "99" ["shop_url"]=> string(4) "Asss" ["shop_title"]=> string(4) "saew" ["logo_pic"]=> string(19) "1817893888095_n.jpg" ["company_locality"]=> string(11) "Lomas altas" ["store_id"]=> string(1) "1" ["allowed_categories"]=> string(0) "" } } } } array(1) { [0]=> object(stdClass)#4 (1) { ["resultados"]=> array(3) { [0]=> object(stdClass)#1 (7) { ["seller_id"]=> string(3) "102" ["shop_url"]=> string(0) "" ["shop_title"]=> string(0) "" ["logo_pic"]=> string(39) "https://es.stackoverflow.com/Tienda.png" ["company_locality"]=> string(9) "San Juena" ["store_id"]=> string(1) "1" ["allowed_categories"]=> string(0) "" } [1]=> object(stdClass)#2 (7) { ["seller_id"]=> string(3) "102" ["shop_url"]=> string(0) "" ["shop_title"]=> NULL ["logo_pic"]=> string(36) "https://es.stackoverflow.com/luz.jpg" ["company_locality"]=> NULL ["store_id"]=> string(1) "0" ["allowed_categories"]=> string(0) "" } [2]=> &object(stdClass)#3 (7) { ["seller_id"]=> string(2) "99" ["shop_url"]=> string(4) "Asss" ["shop_title"]=> string(4) "saew" ["logo_pic"]=> string(48) "https://es.stackoverflow.com/1817893888095_n.jpg" ["company_locality"]=> string(11) "Lomas altas" ["store_id"]=> string(1) "1" ["allowed_categories"]=> string(0) "" } } } }