FileA.php

 <?php
    ini_set('max_execution_time',3600);
    Class Database4{
        protected $username;
        protected $password;
        protected $server;
        protected $dbName;
        public $conn;

        public function __construct(){
            $this->connection();
        }
        public function __destruct(){
            $this->conn=null;
        }
        protected function connection(){
            try{
                $this->username='dummyUser';
                $this->password='dummyPass';
                $this->server='192.168.0.42';
                $this->dbName='dummyDatabase';
                $this->conn=new PDO('dblib:host='.$this->server.':1433;dbname='.$this->dbName, $this->username, $this->password);
            } catch (PDOException $e){echo "Error: ".$e->getMessage();}
        }

        public function insert($sqlInsert){
            $stmt=$this->conn->prepare($sqlInsert);
            $stmt->execute();
            return $stmt;
        }

        public function update($sqlUpdate){
            $stmt=$this->conn->prepare($sqlUpdate);
            $stmt->execute();
            return $stmt;
        }
        public function delete($sqlDelete){
            $stmt=$this->conn->prepare($sqlDelete);
            $stmt->execute();
            return $stmt;
        }
        public function select($sqlSelect){
            $stmt=$this->conn->prepare($sqlSelect);
            $stmt->execute();
            return $stmt;
        }
        public function numofrows($sql){
            $stmt=$this->conn->prepare($sql);
            $stmt->execute();
            $numofrows= count($stmt->fetchAll());
            return $numofrows;
        }
    }
?>