SELECTING Multiple Rows with an Array and then INSERT to another statement - php

Question

I am trying to SELECT data from one table based on the ID and then INSERT the returned data in to another table.
My code is:
<?php
require '../../db-config.php';
if(isset($_POST['course'])) {
$selected_courses = '('. implode(',', $_POST['course']) .')';
$status = 'Live';
$active = 'Y';
$stmt = "SELECT id, coursetitle FROM courses WHERE id IN ". $selected_courses ."
AND status = ?";
$stmt = $conn->prepare($stmt);
$stmt->bind_param('i', $selected_courses);
$stmt->execute();
$stmt->bind_result($id, $coursetitle);
while($stmt->fetch()) {
$stmt = $conn->prepare("INSERT INTO distributor_course_settings
(id, active, coursetitle) VALUES (?, ?, ?)");
$stmt->bind_param("iss", $id, $active, $coursetitle);
$stmt->execute();
}
}
?>
The error I am getting is: PHP Fatal error: Call to a member function
bind_param() on boolean
What is wrong with my code?

Answer 1

you can perform both actions (select and insert) in one query. Something like this:
INSERT INTO distributor_course_settings
(id, distributor, active, coursetitle)
SELECT id, '$distributer', 'Y', coursetitle
FROM courses
WHERE id IN ". $selected_courses ."
AND status = 'Live'
the values in select statement can be anything like string, php variable or a subselet statment like:
INSERT INTO distributor_course_settings
(id, distributor, active, coursetitle)
SELECT id, (select distributer from distributor_course_settings where id = 12), 'Y', coursetitle
FROM courses
WHERE id IN ". $selected_courses ."
AND status = 'Live'
and if its a php variable, you statement could look like this:
$stmt = "INSERT INTO distributor_course_settings
(id, distributor, active, coursetitle)
SELECT id, '".$distributor."', 'Y', coursetitle
FROM courses
WHERE id IN ". $selected_courses ."
AND status = 'Live'"