<?php
$age = 30;
$dateFrom = '2016-01-01';
$dateTo = '2016-08-31';
$query = sprintf("SELECT name, timestamp FROM people WHERE age = %d AND timestamp >= '%s' AND timestamp < '%s';", $age, $dateFrom, $dateTo);
echo $query;
PD9waHAKCiRhZ2UgPSAzMDsKJGRhdGVGcm9tID0gJzIwMTYtMDEtMDEnOwokZGF0ZVRvID0gJzIwMTYtMDgtMzEnOwoKJHF1ZXJ5ID0gc3ByaW50ZigiU0VMRUNUIG5hbWUsIHRpbWVzdGFtcCBGUk9NIHBlb3BsZSBXSEVSRSBhZ2UgPSAlZCBBTkQgdGltZXN0YW1wID49ICclcycgQU5EIHRpbWVzdGFtcCA8ICclcyc7IiwgJGFnZSwgJGRhdGVGcm9tLCAkZGF0ZVRvKTsKCmVjaG8gJHF1ZXJ5Ow==