Get all data with owner = value From json code with php - php

Question

i want get all objects with owner = true
i have made code that get specific data from json array
so when i print id to find it give me the last one i want it print all owner value = true
i did try foreach but give me error
so any one can help me
{
"owner":true,
"number":2146958847,
"ser":"333",
"id":"505417057861500987",
"name":" test"
},
{
"owner":true,
"number":2146958847,
"ser":null,
"id":"506154122521608196",
"name":"test1"
}
]
my code
<?php $o1 = json_encode($_SESSION['guilds']);
$arr = json_decode($o1,true);
$username = array();
$len = count($arr);
for($i = 0; $i < $len; $i++){
$id = $arr[$i]["id"];
$owner = $arr[$i]["owner"];
$isowner[$owner] = $id;
}
$thisisowner = true;
if(isset($isowner[$thisisowner]) ){
$idToFind = $isowner[$thisisowner];
echo $idToFind;
}else{
echo "this owner doesn't exist";
}
?>
output for this code = 505417057861500987
i want to be like this =
id: 505417057861500987 - Number : 2146958847 | name : test1 ,id : 506154122521608196 | Number : 2146958847| name : test
not one