Дмитрий

$a = "Артем=>4,Максим.Антон=>421414,Алина=>222,";
$a = trim($a, ', \n\r\t\v\x00');

$result = call_user_func_array(
    'array_merge_recursive',
    array_map(function($str){
        [$key, $value] = explode('=>', $str);
        return [$key => $value];
    }, explode(',', $a))
);

foreach ($result as $key => $value) {
    echo $key . ' : ' . $value . "<br>\n";
}

$a = "Артем=>4,Максим.Антон=>421414,Алина=>222,";
$a = trim($a, ', \n\r\t\v\x00');

$result = array_map(fn($str) => explode('=>', $str), explode(',', $a));

foreach ($result as $v) {
    echo $v[0] . ' : ' . $v[1] . "<br>\n";
}

foreach ($_GET['aServicesObj'] as $key => $value) {
    $serv .= $key.'=>'.$value.',';
}

$serv = trim($serv, ',');

//foreach ($_GET['aServicesObj'] as $key => $value) {
//    $serv .= $key.'=>'.$value.',';
//}
$serv = json_encode($_GET['aServicesObj']);

$result = json_decode($serv);

foreach ($result as $k => $v) {
    echo $k . ' : ' . $v . "<br>\n";
}

$data = [
    'Артем' => 4,
    'Максим.Антон' => 421414,
    'Алина' => 222,
];
$serv = http_build_query($data);

/////////////////

parse_str($serv, $result);

foreach ($result as $k => $v) {
    echo $k . ' : ' . $v . "<br>\n";
}

select
    lng.object_id,
    ltd.value as latitude,
    lng.value as longitude
  from obj_table lng, obj_table ltd
  where lng.field_name = 'longitude'
    and ltd.field_name = 'latitude'
    and lng.object_id = ltd.object_id
;

select
    object_id,
    max(case field_name when 'latitude' then value else null end) as latitude,
    max(case field_name when 'longitude' then value else null end) as latitude,
    max(case field_name when 'category' then value else null end) as category
  from obj_table
  group by object_id;

-- собираем в json:
select
    object_id,
	cast(replace(group_concat(json_object(field_name,value)),'},{',',') as json) json_obj
  from obj_table
  group by object_id
;

-- или так:
select
    object_id,
    cast(concat('{',group_concat( concat('"',field_name,'":"',value,'"') separator ',' ), '}') as json) as json_obj
  from obj_table
  group by object_id
;

-- извлекаем поля из json:
select
    object_id,
    json_extract(json_obj,'$.latitude') as latitude,
    json_extract(json_obj,'$.longitude') as latitude,
    json_extract(json_obj,'$.category') as category
  from (
select
    object_id,
    cast(replace(group_concat(json_object(field_name,value)),'},{',',') as json) json_obj
  from obj_table
  group by object_id
  ) t
;

r w x | - - - | - - -
4+2+1 | 0+0+0 | 0+0+0
    7       0       0

r w x | r - x | r - x
4+2+1 | 4+0+1 | 4+0+1
    7       5       5

Но смущает одно, IMove::move() для персонажа игры, скорее всего, будет принимать x,y координаты, а для файла - конечный путь.

return "$n " . ( ($n / 10) % 10 == 1 || $n % 10 > 4 || $n % 10 == 0 ? 'лет' : ($n % 10 == 1 ? 'год' : 'года') );

<?php
$birthDate = '20.02.2010';
if (time() < strtotime('+18 years', strtotime($birthDate))) {
    echo 'меньше 18';
} else {
    echo 'больше 18';
}