Answers for "php connection with database server"

how to connect to a database in php

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

// Create connection
$conn = new mysqli($servername, $username, $password);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>

database connection in php

<?php

$hostName = 'localhost';
$userNmame = 'root';
$password = '';
$dbname = 'topproduct';
$db_name = "mysql:host=$hostName;dbname=$dbname";
$conn = new PDO($db_name,$userNmame,$password);

if(!$conn){
    echo 'Error database connection';    
}

connect sql server php

//Connect MSSQL
$serverName = '192.xxx.xxx.xx';
$userName = 'usertest';
$userPassword = 'pwdtest';
$dbName = 'dbtest';
 
try{
	$conn = new PDO("sqlsrv:server=$serverName ; Database = $dbName", $userName, $userPassword);
	$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(Exception $e){
	die(print_r($e->getMessage()));
}
 
//การ query และแสดงข้อมูล จัดเรียงตามฟิวด์ field1 แบบมากไปน้อย เริ่มที่เรคคอร์ดที่ 0-100
$query = " SELECT * FROM tbl 
ORDER BY field1 DESC
OFFSET 0 ROWS
FETCH NEXT 100 ROWS ONLY ";
$getRes = $conn->prepare($query);
$getRes->execute();
 
while($row = $getRes->fetch( PDO::FETCH_ASSOC ))
{
echo $row['field1']."<br />";
echo $row['field2']."<br />";
}