<?php
include_once 'database.php';
$username= $_POST['username'];
$pass= $_POST['password'];
mysqli_query($conn ,"DELETE FROM mytable2 ( username , password) values ('{$_POST['username']}','{$_POST['password']}') ");
echo "DELETE FROM mytable2 ( username , password) values ('{$_POST['username']}','{$_POST['password']}')";
?>
<?php
include_once 'database.php';
$username= $_POST['username'];
$pass= $_POST['password'];
mysqli_query($conn ,"INSERT INTO mytable2 ( username , password) values ('{$_POST['username']}','{$_POST['password']}') ");
echo "INSERT INTO mytable2 ( username , password) values ('{$_POST['username']}','{$_POST['password']}')";
?>
none of them works , i don t understand why