Change mySQL password without SQL manager or PHPmyAdmin

reset-v1.php

<?php
//Connect to mySQL First
$connection = mysql_connect('DB_HOST','DB_USER','DB_PASSWORD');
 
//Select Database
mysql_select_db('DB_NAME');
 
//Reset password with SQL UPDATE Query
$SQL="update wp_users set user_pass=MD5('newpassword123here') where user_login='admin'";
 
//If everything's OK, your password will be reset
if(mysql_query($SQL)){
  echo "Your password was succesfully reset!";
}

reset-v2.php

<?php
//Connect to mySQL First
$connection = mysql_connect('127.0.0.1','user_123','password_123');
 
//Select Database
mysql_select_db('database_123');
 
//Reset password with SQL UPDATE Query
$SQL="update wp_users set user_pass=MD5('newpassword123here') where user_login='admin'";
 
//If everything's OK, your password will be reset
if(mysql_query($SQL)){
  echo "Your password was succesfully reset!";
}

wp-config.php

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define('DB_NAME', 'database_123');
 
/** MySQL database username */
define('DB_USER', 'user_123');
 
/** MySQL database password */
define('DB_PASSWORD', 'password_123');
 
/** MySQL hostname */
define('DB_HOST', '127.0.0.1');