<?php error_reporting(E_ALL); ini_set('display_errors', 'on'); echo phpversion(); $hashed_password1 = hash('sha512', '123a'); $hashed_password2 = hash('sha512', '123a'); echo "Hash1=".$hashed_password1; echo "<hr>Hash2=".$hashed_password2; $con=mysqli_connect("localhost","username","password","lrr"); // Check connection if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } else { echo "Connected "; } mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT); $query = "SELECT * from users_table;"; $result = mysqli_query($con, $query); if (mysqli_num_rows($result) > 0) { echo "<table>"; while ($row = mysqli_fetch_assoc($result)) { $id=$row["User_ID"]; $pass=$row["Password"]; $hash_pass=hash('sha512', $pass); $inner_query = "update users_table set HashPassword='$hash_pass' where User_ID=$id;"; if ($con->query($inner_query) === TRUE) { echo " User # $id updated<br>"; } //echo "<tr>"; //echo "<td>{$row['Password']}</td><td>{$row['Email']}</td>"; //echo "</tr>"; } echo "</table>"; }