<?php
function zugang($dbname, $tabname,
   $name_eingabe, $passwort_eingabe)
{
   $con = new mysqli("", "root", "", $dbname);
   $ps = $con->prepare(
      "SELECT name, passwort FROM $tabname WHERE name=?");
   $ps->bind_param("s", $name_eingabe);
   $ps->execute();
   $ps->bind_result($name_db, $passwort_db);

   $ps->store_result();
   if($ps->num_rows > 0)
   {
      $ps->fetch();
      if(password_verify($passwort_eingabe, $passwort_db))
         $ergebnis = true;
      else
         $ergebnis = false;
   }
   else
      $ergebnis = false;

   $ps->close();
   $con->close();
   return $ergebnis;
}
?>