Merge multiple object in foreach - php

Question

I have one or more object in foreach and I want to merge all the objects in one in $refJSON.
$refObj = (object) array();
foreach($items as $item) { //here Im looping Two items
$refObj->refId = $item->getId();
$refObj->refLastName = $item->getLastName();
$refObj->refPhone = $item->getPhone();
$orderObj->refEmail = $item->getEmail();
}
$refJSON = json_encode($orderObj);
var_dump($refJSON);
Output :
//just the last item object
string(92) "{
"refId":"2",
"refLastName":"Joe",
"refPhone":"xxxxxxx",
"refEmail":"example#domaine.com"
}"
The output expected is to merge all the items ids 1 and 2 something like this:
[
{
"refId":"1",
"refLastName":"Steve",
"refPhone":"xxxxxxx",
"refEmail":"foo#domaine.com"
},
{
"refId":"2",
"refLastName":"Joe",
"refPhone":"xxxxxxx",
"refEmail":"example#domaine.com"
}
]

Answer 1

You are just overwriting the same object each time. Build each object and add this to an array (using []) and encode the result...
$refOut = array();
foreach($items as $item) { //here Im looping Two items
$refOut[] = ['refId' => $item->getId(),
'refLastName' => $item->getLastName(),
'refPhone' => $item->getPhone(),
'refEmail' => $item->getEmail()];
}
$refJSON = json_encode($refOut);