I'm having a similar error: PHP mysqli condition greater than or less than symbol error
But I don't find a solution to this since my application is a bit different.
I have following statement right now:
$stmt = $this->mysqli->prepare("SELECT * FROM applications");
$stmt->bind_param("i", $MTNOW);
Everytime my users sends a new application there will be a field named "mtime" which stands "microtime" and it's rounded to numeric format without a double value so it's 1489344810.
How do I can make a calculation to prepared statement like that it will select each row's microtime and increase it by 18000 seconds (5 hours) so I can compare the result to current microtime? It should show only results that are created in 5 hours. Rest of the records will not be shown.
The idea:
SELECT * FROM applications WHERE (mtime+18000) < ?
bind_param("i", $MTNOW);
Check the documentation:
http://php.net/manual/en/pdostatement.bindparam.php
$stmt = $this->mysqli->prepare("SELECT * FROM applications WHERE mtime < ?");
$stmt->bind_param("1", (yourValue + or - 18000));
$stmt->execute();
return $stmt->fetchAll(PDO::FETCH_OBJ);