Sergei Nazarenko

>>> 0o777
511

$result = array();
$stringParams = 'name=%D0%98%D0%BB%D1%8C%D1%8F;phone=89213251626';
$paramsArray = explode(';', $stringParams);
foreach ($paramsArray as $item) {
    list($k, $v) = explode('=', $item);
    $result[$k] = $v;
}

$arr = explode(';', 'name=%D0%98%D0%BB%D1%8C%D1%8F;phone=89213251626');
foreach($arr as $item) {
    $tmp  = explode('=', $item);
    $array[$tmp[0]] = $tmp[1];
}

$arr = null;
$returnValue = parse_str('name=%D0%98%D0%BB%D1%8C%D1%8F&phone=89213251626', $arr);

//результат 
array (
  'name' => 'Илья',
  'phone' => '89213251626',
)

select *
from lots l
where exists (select * from lots_params p 
                      where l.id = p.lot_id and p.param_id=1 AND p.param_value=36)

   and  exists (select * from lots_params p 
                       where l.id = p.lot_id and p.param_id=2 AND p.param_value=54)