How can I make this PHP file check the passwords and usernames in the array?

This is for a login page. I know using an array is bad practice, however this is for an assignment that asks us to use an associative array. I am running my code, however I keep getting the "invalid username and password " message when I try the credentials.This is my code for the php file:

<?php  $credentials = array(    'admin1' => '@Admin1'    'admin2' => '@Admin2'    'admin3' => '@Admin3'    'admin4' => '@Admin1'  );    $username = isset($_POST['username']) ? $_POST['username'] : '';  $password = isset($_POST['password']) ? $_POST['password'] : '';    if ($credentials[$username]===$password){  echo 1;      }      else{        echo 0;      }    }      

Here is my javascript

$(document).ready(function(){      $("#btn-submit").click(function(){          var username = $("#username").val().trim();          var password = $("#password").val().trim();            if( username != "" && password != "" ){              $.ajax({                  url:'login.php',                  type:'post',                  data:{username:username,password:password},                  success:function(response){                      var msg = "";                      if(response == 1){                          window.location = "product.html";                      }else{                          msg = "Invalid username and password!";                      }                      $("#message").html(msg);                  }              });          }      });  });    

https://stackoverflow.com/questions/66978229/how-can-i-make-this-php-file-check-the-passwords-and-usernames-in-the-array April 07, 2021 at 08:47AM