How to Add Data in Database using PHP coding

Create A Form using the Input field

Open Database in Google Chrome using this command

localhost/phpmyadmin

create Database names like as 

Database Name
School

create Table names like as

Table Name
tbl_register

Make a Form using a different name to match with the database
 

<?php
    if(isset($_POST['addrecord'])){
     $username=$_POST['username'];
     $email=$_POST['email'];
     $phone=$_POST['phone'];
   try{
     $sql = "INSERT INTO tbl_register (username,email,phone) VALUES ('$username','$email','$phone')";
     $conn->exec($sql);
     echo "Record Insert Successfully";
     }catch(PDOException $e){
 echo  echo "Failed to Enter Data in Database";
    }
}
?>