Hi! Could we please enable some services and cookies to improve your experience and our website?
Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
create table users (username int, password int);
insert into users values (1,1);
<?php
$username = "' OR '1'='1";
$password = "";
$query = "SELECT * FROM users WHERE username = '$username' AND password = '$password'";
$result = mysqli_query($mysqli, $query);
var_dump($result->fetch_all());
$query = "SELECT * FROM users WHERE username = '1' AND password = '1'";
$result = mysqli_query($mysqli, $query);
var_dump($result->fetch_all());