How to insert an array into a Mysql table - php

Question

I want to insert an array ($array) into a Mysql table (notification), I tried this but nothing is entering. How do I solve this?
$select = "SELECT * FROM addclique WHERE adder_id = :session_id";
$param1 = array ('session_id' => $_SESSION['id']);
$cliques = $db->query($select, $param1);
foreach($cliques as $key)
{
$array[] = $key['clique_id'];
}
$array[] = $key['clique_id'];
$notijfy = new Notification();
$notijfy->addCircle($array);
function addCircle($id_involve){
$escaped_values = array_map('mysql_real_escape_string', array_values($array));
$sql2 = "INSERT INTO notification(id_involve) VALUES (:id_involve)";
$param2 = array ('id_involve' => implode(", ", $escaped_values));
$result2 = $this->db->query ($sql2, $param2);
}

Answer 1

There are several ways.
I would just do something simple like this:
foreach($cliques as $key){
$array[] = $key['clique_id'];
}
$notijfy = new Notification();
$notijfy->addCircle($array);
function addCircle($array){
$insert_string = '';
$count = 0;
foreach ($array as $k => $v){
$count++;
${$k} = mysqli_real_escape_string($this->db, $v);
$insert_string .= "(" . ${$k} . ")";
if ($count < sizeof($array)){
$insert_string .= ",";
}
}
$sql2 = "INSERT INTO notification(id_involve) VALUES $insert_string;";
$result2= $this->db->query ($sql2, $param2);
}
Your major error is that you are trying to pass ($passing an array when calling the function, but in the function itself your argument is listed as $id_involve, when you obviously need an $array variable that you are using in the function itself. I also can't understand why are you trying to add an element to the $array variable outside of foreach loop in the beginning. Doesn't make any sense.
Instead of $this->db just use your connection variable.