<?php
$loginUserName = $_POST['loginUserName'];
$loginPassword = $_POST['loginPassword'];
$loginsAndPasswords = array('admin1' => 'qwerty1', 'admin2' => 'qwerty2', 'admin3' => 'qwerty3');
$checkPassword = array_search($loginPassword, $loginsAndPasswords);
if($checkPassword == $loginUserName) {
session_start();
$_SESSION["loginUserName"] = $loginUserName;
$_SESSION["loginPassword"] = $loginPassword;
header("location:loginOk.php");
}
else {
echo '<strong style="color: red">Wrong Login or Password</strong><br><br>';
echo '<a href="authentification.html">Try again</a>';
}
?>