如何使用oops php5概念将数据插入mysql数据库？

Question

I am new for PHP5 OOP concept. Please give some example source code for "How to insert data using oops concept?".I want to use pure php5 concept for this even in the connection.php page also. I want to improve my knowledge. please any one help me....

I know below the basic concept

insert_db.php

                $sql="INSERT INTO Persons (FirstName, LastName, Age)
            VALUES
            ('$_POST[firstname]','$_POST[lastname]','$_POST[age]')";

            if (!mysql_query($sql,$con))
              {
              die('Error: ' . mysql_error());
              }
            echo "1 record added";

            mysql_close($con)

connectio.php

          <?php
            // connect database  code
             $dbhost ='localhost';
            $dbuser = 'tomking';
            $dbpass = 'dsfds';
            $dbname = 'mydb';
            //connectivity of database
            $conn = mysql_connect($dbhost,$dbuser,$dbpass) or die ('Error Connecting to mysql');
            mysql_select_db($dbname);
          ?>

Answer 1

Use Mysqli or PDO for using sql queries instead of directly pass variables to query.

This will cause sql injection when you directly pass variable to query

If you want to pass variable to sql query , you have to use filters for this

filtering-escaping-post-data-from-injection-attacks

PDO Documentation

MySQLi Documentation

And this is all pure PHP5 concept.