<?php
header("Content-Type: text/plain; charset=UTF-8");
define("WP_USE_THEMES", false);
@include __DIR__."/wp-config.php";
if(!defined("DB_NAME")){ echo "ERR: no wp-config\n"; exit; }
$lnk=@mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
if(!$lnk){ echo "ERR: db connect\n"; exit; }
$pref = "";
$best = null;
$q = mysqli_query($lnk, "SHOW TABLES");
while($q && ($r=mysqli_fetch_row($q))){
  $t=$r[0];
  if(substr($t,-8)==="options"){  // *_options
    $p = substr($t,0,-8);
    // ambil kandidat dengan suffix "_" kalau ada
    if(substr($p,-1)==="_"){ $best=$p; break; }
    if(!$best) $best=$p;
  }
}
mysqli_close($lnk);
if(!$best){ echo "FOUND_PREFIX=\n"; exit; }
if(substr($best,-1)!=="_") $best.="_";
echo "FOUND_PREFIX=".$best."\n";