php connection mysql pdo code example

Example 1: php mysql pdo connection

<?php
$servername = "localhost";
$username = "username";
$password = "password";

try {
    $conn = new PDO("mysql:host=$servername;dbname=myDB", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully";
    }
catch(PDOException $e)
    {
    echo "Connection failed: " . $e->getMessage();
    }
?>

Example 2: php pdo connection

$host     = "localhost";//Ip of database, in this case my host machine    
$user     = "root";	//Username to use
$pass     = "qwerty";//Password for that user
$dbname   = "DB";//Name of the database

try {
    $connection = new PDO("mysql:host=$host;dbname=$dbname", $user, $pass);
    $connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

}catch(PDOException $e)
{
  echo $e->getMessage();                         
}

Example 3: how to connect pdo php database

<?php
$servername = "localhost";
$username = "username";
$password = "password";

try {
  $conn = new PDO("mysql:host=$servername;dbname=myDB", $username, $password);
  // set the PDO error mode to exception
  $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  echo "Connected successfully";
} catch(PDOException $e) {
  echo "Connection failed: " . $e->getMessage();
}
?>

Example 4: db connection in php

Just include this Temlate in other file using PHP Include/Require Keywords
 And Make Connection In One Shot :)

<?php
  
    // echo "Welcome to Connecting of DB Tutorial!";
    // echo "<br>";

    // 1. PDO - Php Data Objects
    // 2. MySQLi extension

    // Set Connection Variable
    $server = "localhost";
    $username = "root";
    $password = "";
    $database = "test";

    // Create A Connection
    $con = mysqLi_connect($server, $username, $password, $database);

     // Check For Connection
     if(!$con){
        die ("Connection Terminated! by Die() function". mysqLi_connect_error());
       
    }
    else {
        echo "Connection Succefully Happened! <br>";
    }


    ?>