functions.php

<?php
    function check_login($connect) {
        if(isset($_SESSION['user_id'])) {
            // something is posted
            $id = $_SESSION['user_id'];
            $query = "select * from bridge_infomatics where user_id = '$id' limit 1";

            $result = mysqli_query($connect, $query);

            if ($result && mysqli_num_rows($result) > 0) {
                $user_data = mysqli_fetch_assoc($result);
                return $user_data;
            }
        }
        //redirect to meet page
        header("Location: meet.php");
        die("Logged out!");
    }
     
    function random_num($length) {
        $text ="";

        if($length < 5){
            $length = 5;
        }
        $len = rand(4, $length);
        for ($i=0; $i < $len; $i++){
            $text .= rand(0, 9);
        }

        return $text;
    }
?>