Description:
------------
I have the following database with two rows (simplified just to show the issue):

sqlite> select * from bl;
addr  tstamp       
----  -------------
1     10           
2     20           

when running the (prepared) query:
"select * from bl where 30 - tstamp > :param AND :param = :param", with ":param" bound to the value 15, I get no rows as result.

I would expect to receive the row with tstamp = 10 as correct result (as I do if I run the query with the sqlite3 command line client).

SQlite version: 3.7.2

Test script:
---------------
$ sqlite3 test.sqlite
sqlite> CREATE TABLE bl (address text unique, tstamp integer not null);

$ sqlite3 test.sqlite
SQLite version 3.7.2
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> create table bl (address text unique, tstamp integer not null);
sqlite> insert into bl values (1,10);
sqlite> insert into bl values (2,20);

=====
<?php
$db = new PDO("sqlite:test.sqlite");
$q = $db->prepare("select * from bl where 30 - tstamp > :param AND :param = :param");
$q->bindValue(":param", 15);
$q->execute();
print_r($q->fetchAll(PDO::FETCH_ASSOC));
?>
=====

Expected result:
----------------
Running the following script, on an sqlite3 shell, I get the following (expected output):
=====
sqlite> select * from bl where 30 - tstamp > 15 AND 15 = 15;
addr  tstamp       
----  -------------
1     10           
=====

The same happens running the following script (note the only difference with the non-working script is that I replaced the first instance of ":param" with the corresponding hard-coded value):
=====
$q = $db->prepare("select * from bl where 30 - tstamp > 15 AND :param = :param");
$q->bindValue(":param", 15);
$q->execute();
print_r($q->fetchAll(PDO::FETCH_ASSOC));
=====

Actual result:
--------------
See description.