How to make a redirect after successful DLE authorization?

Question

PHP

On the DLE site, it was required to display the authorization form on a separate page. Brought it out, everything works great. If the authorization was not successful, then an error pops up. But with successful authorization trouble. Login occurs, but there is no transition to the main one. I can't understand the reason.

Сама форма
///////////////
<input name="login_name" id="login_name"value="" tabindex="1" placeholder="Login" type="text" autofocus autocomplete="off" data-required="true" style="background: white;border: 0px;padding: 12px;padding-left: 30px;margin: 0;line-height: 24px;height: 44px; width:300;color: #8e9ba9;font-size: 14px;font-family: "PT Sans", sans-serif; -webkit-border-radius: 4px;-moz-border-radius: 4px;border-radius: 4px;-webkit-box-sizing: border-box;-moz-box-sizing: border-box;box-sizing: border-box; width: 100%;" />
      </div>
  </div>		
    <br>
    <div class="s-field " >
      <div style="position: relative">
<input  type="password" name="login_password" id="login_password" value="" tabindex="1" placeholder="Password" autofocus autocomplete="off" data-required="true" style="background: white;border: 0px;padding: 12px;padding-left: 30px;margin: 0;line-height: 24px;height: 44px; width:300;color: #8e9ba9;font-size: 14px;font-family: "PT Sans", sans-serif; -webkit-border-radius: 4px;-moz-border-radius: 4px;border-radius: 4px;-webkit-box-sizing: border-box;-moz-box-sizing: border-box;box-sizing: border-box; width: 100%;" />
      </div>
  </div>

    
   
    
    <br>
<div style="width:300px;margin-left: 0px;margin-right: 0px;">
<div class="section no_padding transparent">

<button name="login" type="hidden" id="login" value="submit" style="width:300px" class="button block big">Войти</button>

<?php

  if( ! defined( 'DATALIFEENGINE' ) ) {
    die( "Hacking attempt!" );
  }
  if( $is_logged ) {
    header( "Location: {$_SERVER['PHP_SELF']}" );
  } else {
    $tpl->load_template( 'login_page.tpl' );
    $tpl->set( '{registration-link}', $PHP_SELF . "?do=register" );
    $tpl->set( '{lostpassword-link}', $PHP_SELF . "?do=lostpassword" );
    $tpl->set( '{login-method}', $config['auth_metod'] ? "E-Mail:" : $lang['login_metod'] );
    $tpl->copy_template = "<form  method=\"post\" action=\"\">\n" . $tpl->copy_template . "
<input name=\"login\" type=\"hidden\" id=\"login\" value=\"submit\" >
</form>";
    $tpl->compile( 'content' );
    $tpl->clear();
  };

?>

Answer 1

not an expert on DLE, so I can only advise a direct solution
instead
of specifying

header( "Location: /" );
exit();

or at least just
header( "Location: $_SERVER['PHP_SELF']" );