maximw

header('Content-Type: application/pdf');
header('Content-Disposition: attachment; filename="downloaded.pdf"');
echo $data;

$array = json_decode($json, true);
$result = array();
foreach($array['data'] as $item) {
  $result[] = $item['images']['low_resolution']['url'];
}

$i = 0;
foreach ($data as $key => $value) {
   foreach ($value['users']['items'] as $ky => $val) {
   ...
        $i++;
        echo $i;
   }
}

SELECT DISTICT product_id  FROM t AS t1
LEFT JOIN t AS t2 ON t1.product_id = t2.product_id
WHERE t1.param_id = 1 AND t2.param_id = 2 OR t1.param_id = 2 AND t2.param_id = 1

SELECT * FROM t1
WHERE s1 IN (SELECT s2 FROM t2 ORDER BY s1 LIMIT 1);
ERROR 1235 (42000): This version of MySQL doesn't yet support
 'LIMIT & IN/ALL/ANY/SOME subquery'