get password for adminer_pass.php or http://www.passwordtool.hu/php5-password-hash-generator

get_password.php

<?php

if(isset($_POST["sub"])) {
	
  $pass_has = password_hash($_POST['firstpassword'], PASSWORD_DEFAULT);
echo $pass_has; //get password first
//	die;
}
?>

<form name="input" action="" method="post">
    <label for="firstpassword">Password:</label><input type="password" value="" id="firstpassword" name="firstpassword" />    
    <input type="submit" value="login" name="sub" />
</form>

or <a href="http://www.passwordtool.hu/php5-password-hash-generator">get pass</a>