- json_encode: documentation ( source)
<?php
$family_ids = array(1,2,3,4,5,6);
$data = [];
foreach ($family_ids as $fam_member){
$data[]= ["type"=>"Person","id"=> $fam_member];
}
$household = '{
"data": {
"attributes": {
"name":"xxxxxx"
},
"relationships": {
"people":{
"data":'. json_encode($data) . '
},
"primary_contact":{
"data":{"type":"Person","id":"1"}
}
}
}
}';
echo($household);